diff --git a/Source/MatrixFunctions/arm_mat_add_f16.c b/Source/MatrixFunctions/arm_mat_add_f16.c
index 2db2c2a2..2018a090 100755
--- a/Source/MatrixFunctions/arm_mat_add_f16.c
+++ b/Source/MatrixFunctions/arm_mat_add_f16.c
@@ -62,7 +62,7 @@ arm_status arm_mat_add_f16(
     arm_status status;  
     uint32_t  numSamples;       /* total number of elements in the matrix  */
     float16_t *pDataA, *pDataB, *pDataDst;
-    f16x8_t vecA, vecB, vecDst;
+    f16x8_t vecA, vecB, vecDst = { 0 };
     float16_t const *pSrcAVec;
     float16_t const *pSrcBVec;
     uint32_t  blkCnt;           /* loop counters */
diff --git a/Source/MatrixFunctions/arm_mat_add_f32.c b/Source/MatrixFunctions/arm_mat_add_f32.c
index 81a39511..0561da64 100644
--- a/Source/MatrixFunctions/arm_mat_add_f32.c
+++ b/Source/MatrixFunctions/arm_mat_add_f32.c
@@ -88,7 +88,7 @@ arm_status arm_mat_add_f32(
     arm_status status;  
     uint32_t  numSamples;       /* total number of elements in the matrix  */
     float32_t *pDataA, *pDataB, *pDataDst;
-    f32x4_t vecA, vecB, vecDst;
+    f32x4_t vecA, vecB, vecDst = { 0 };
     float32_t const *pSrcAVec;
     float32_t const *pSrcBVec;
     uint32_t  blkCnt;           /* loop counters */
diff --git a/Source/MatrixFunctions/arm_mat_add_q15.c b/Source/MatrixFunctions/arm_mat_add_q15.c
index e27b72fa..de9661fa 100644
--- a/Source/MatrixFunctions/arm_mat_add_q15.c
+++ b/Source/MatrixFunctions/arm_mat_add_q15.c
@@ -59,7 +59,7 @@ arm_status arm_mat_add_q15(
 {
     uint32_t        numSamples;       /* total number of elements in the matrix  */
     q15_t          *pDataA, *pDataB, *pDataDst;
-    q15x8_t       vecA, vecB, vecDst;
+    q15x8_t       vecA, vecB, vecDst = { 0 };
     q15_t const   *pSrcAVec;
     q15_t const   *pSrcBVec;
     uint32_t        blkCnt;           /* loop counters */
diff --git a/Source/MatrixFunctions/arm_mat_add_q31.c b/Source/MatrixFunctions/arm_mat_add_q31.c
index 57f67e71..18a352f8 100644
--- a/Source/MatrixFunctions/arm_mat_add_q31.c
+++ b/Source/MatrixFunctions/arm_mat_add_q31.c
@@ -59,7 +59,7 @@ arm_status arm_mat_add_q31(
     arm_status status;                             /* status of matrix addition */
     uint32_t        numSamples;       /* total number of elements in the matrix  */
     q31_t          *pDataA, *pDataB, *pDataDst;
-    q31x4_t       vecA, vecB, vecDst;
+    q31x4_t       vecA, vecB, vecDst = { 0 };
     q31_t const   *pSrcAVec;
     q31_t const   *pSrcBVec;
     uint32_t        blkCnt;           /* loop counters */
diff --git a/Source/MatrixFunctions/arm_mat_sub_f16.c b/Source/MatrixFunctions/arm_mat_sub_f16.c
index 13291b8c..69f77845 100755
--- a/Source/MatrixFunctions/arm_mat_sub_f16.c
+++ b/Source/MatrixFunctions/arm_mat_sub_f16.c
@@ -60,7 +60,7 @@ arm_status arm_mat_sub_f16(
     arm_status status;                             /* status of matrix subtraction */
     uint32_t  numSamples;       /* total number of elements in the matrix  */
     float16_t *pDataA, *pDataB, *pDataDst;
-    f16x8_t vecA, vecB, vecDst;
+    f16x8_t vecA, vecB, vecDst = { 0 };
     float16_t const *pSrcAVec;
     float16_t const *pSrcBVec;
     uint32_t  blkCnt;           /* loop counters */
diff --git a/Source/MatrixFunctions/arm_mat_sub_f32.c b/Source/MatrixFunctions/arm_mat_sub_f32.c
index 567959c1..d6dd5543 100644
--- a/Source/MatrixFunctions/arm_mat_sub_f32.c
+++ b/Source/MatrixFunctions/arm_mat_sub_f32.c
@@ -85,7 +85,7 @@ arm_status arm_mat_sub_f32(
     arm_status status;                             /* status of matrix subtraction */
     uint32_t  numSamples;       /* total number of elements in the matrix  */
     float32_t *pDataA, *pDataB, *pDataDst;
-    f32x4_t vecA, vecB, vecDst;
+    f32x4_t vecA, vecB, vecDst = { 0 };
     float32_t const *pSrcAVec;
     float32_t const *pSrcBVec;
     uint32_t  blkCnt;           /* loop counters */
diff --git a/Source/MatrixFunctions/arm_mat_sub_q15.c b/Source/MatrixFunctions/arm_mat_sub_q15.c
index c3799969..69d31d04 100644
--- a/Source/MatrixFunctions/arm_mat_sub_q15.c
+++ b/Source/MatrixFunctions/arm_mat_sub_q15.c
@@ -59,7 +59,7 @@ arm_status arm_mat_sub_q15(
 {
     uint32_t        numSamples;       /* total number of elements in the matrix  */
     q15_t          *pDataA, *pDataB, *pDataDst;
-    q15x8_t       vecA, vecB, vecDst;
+    q15x8_t       vecA, vecB, vecDst = { 0 };
     q15_t const   *pSrcAVec;
     q15_t const   *pSrcBVec;
     uint32_t        blkCnt;           /* loop counters */
diff --git a/Source/MatrixFunctions/arm_mat_sub_q31.c b/Source/MatrixFunctions/arm_mat_sub_q31.c
index 5045b298..71d3226d 100644
--- a/Source/MatrixFunctions/arm_mat_sub_q31.c
+++ b/Source/MatrixFunctions/arm_mat_sub_q31.c
@@ -58,7 +58,7 @@ arm_status arm_mat_sub_q31(
 {
     uint32_t        numSamples;       /* total number of elements in the matrix  */
     q31_t          *pDataA, *pDataB, *pDataDst;
-    q31x4_t       vecA, vecB, vecDst;
+    q31x4_t       vecA, vecB, vecDst = { 0 };
     q31_t const   *pSrcAVec;
     q31_t const   *pSrcBVec;
     uint32_t        blkCnt;           /* loop counters */
diff --git a/Source/SupportFunctions/arm_float_to_q15.c b/Source/SupportFunctions/arm_float_to_q15.c
index 8061c9f2..d8f98e2c 100644
--- a/Source/SupportFunctions/arm_float_to_q15.c
+++ b/Source/SupportFunctions/arm_float_to_q15.c
@@ -68,7 +68,7 @@ void arm_float_to_q15(
     uint32_t         blkCnt;
     float32_t       maxQ = (float32_t) Q15_MAX;
     f32x4x2_t       tmp;
-    q15x8_t         vecDst;
+    q15x8_t         vecDst = { 0 };
 #ifdef ARM_MATH_ROUNDING
     float32_t in;
 #endif
diff --git a/Source/SupportFunctions/arm_float_to_q7.c b/Source/SupportFunctions/arm_float_to_q7.c
index 27af5206..68102ba8 100644
--- a/Source/SupportFunctions/arm_float_to_q7.c
+++ b/Source/SupportFunctions/arm_float_to_q7.c
@@ -67,8 +67,8 @@ void arm_float_to_q7(
     uint32_t         blkCnt;     /* loop counters */
     float32_t       maxQ = powf(2.0, 7);
     f32x4x4_t       tmp;
-    q15x8_t         evVec, oddVec;
-    q7x16_t         vecDst;
+    q15x8_t         evVec = { 0 }, oddVec = { 0 };
+    q7x16_t         vecDst = { 0 };
     float32_t const *pSrcVec;
 #ifdef ARM_MATH_ROUNDING
     float32_t in;
diff --git a/Source/SupportFunctions/arm_q15_to_q7.c b/Source/SupportFunctions/arm_q15_to_q7.c
index eac81057..a4303e24 100644
--- a/Source/SupportFunctions/arm_q15_to_q7.c
+++ b/Source/SupportFunctions/arm_q15_to_q7.c
@@ -60,7 +60,7 @@ void arm_q15_to_q7(
     uint32_t  blkCnt;           /* loop counters */
     q15x8x2_t tmp;
     q15_t const *pSrcVec;
-    q7x16_t vecDst;
+    q7x16_t vecDst = { 0 };
 
 
     pSrcVec = (q15_t const *) pSrc;
diff --git a/Source/SupportFunctions/arm_q31_to_q15.c b/Source/SupportFunctions/arm_q31_to_q15.c
index a25a2bb1..7423c167 100644
--- a/Source/SupportFunctions/arm_q31_to_q15.c
+++ b/Source/SupportFunctions/arm_q31_to_q15.c
@@ -58,7 +58,7 @@ void arm_q31_to_q15(
 {
     uint32_t  blkCnt;           /* loop counters */
     q31x4x2_t tmp;
-    q15x8_t vecDst;
+    q15x8_t vecDst = { 0 };
     q31_t const *pSrcVec;
 
 
diff --git a/Source/SupportFunctions/arm_q31_to_q7.c b/Source/SupportFunctions/arm_q31_to_q7.c
index 16fbe186..f07d2f69 100644
--- a/Source/SupportFunctions/arm_q31_to_q7.c
+++ b/Source/SupportFunctions/arm_q31_to_q7.c
@@ -58,8 +58,8 @@ void arm_q31_to_q7(
 {
     uint32_t  blkCnt;           /* loop counters */
     q31x4x4_t tmp;
-    q15x8_t evVec, oddVec;
-    q7x16_t  vecDst;
+    q15x8_t evVec = { 0 }, oddVec = { 0 };
+    q7x16_t  vecDst = { 0 };
     q31_t const *pSrcVec;
 
     pSrcVec = (q31_t const *) pSrc;