diff --git a/Source/TransformFunctions/arm_rfft_fast_init_f16.c b/Source/TransformFunctions/arm_rfft_fast_init_f16.c
index c6790cbb..158180b4 100755
--- a/Source/TransformFunctions/arm_rfft_fast_init_f16.c
+++ b/Source/TransformFunctions/arm_rfft_fast_init_f16.c
@@ -342,7 +342,7 @@ arm_status arm_rfft_fast_init_f16(
     break;
 #endif
   default:
-    return ARM_MATH_ARGUMENT_ERROR;
+    break;
   }
 
   if( ! fptr ) return ARM_MATH_ARGUMENT_ERROR;
diff --git a/Source/TransformFunctions/arm_rfft_fast_init_f32.c b/Source/TransformFunctions/arm_rfft_fast_init_f32.c
index 9050aa01..e8273b47 100644
--- a/Source/TransformFunctions/arm_rfft_fast_init_f32.c
+++ b/Source/TransformFunctions/arm_rfft_fast_init_f32.c
@@ -339,7 +339,7 @@ arm_status arm_rfft_fast_init_f32(
     break;
 #endif
   default:
-    return ARM_MATH_ARGUMENT_ERROR;
+    break;
   }
 
   if( ! fptr ) return ARM_MATH_ARGUMENT_ERROR;
diff --git a/Source/TransformFunctions/arm_rfft_fast_init_f64.c b/Source/TransformFunctions/arm_rfft_fast_init_f64.c
index 97c4fb31..c6d3e69c 100755
--- a/Source/TransformFunctions/arm_rfft_fast_init_f64.c
+++ b/Source/TransformFunctions/arm_rfft_fast_init_f64.c
@@ -331,7 +331,7 @@ arm_status arm_rfft_fast_init_f64(
     break;
 #endif
   default:
-    return ARM_MATH_ARGUMENT_ERROR;
+    break;
   }
 
   if( ! fptr ) return ARM_MATH_ARGUMENT_ERROR;