diff --git a/source/application/main/PlatformMath.cc b/source/application/main/PlatformMath.cc
index 9d18151..0043635 100644
--- a/source/application/main/PlatformMath.cc
+++ b/source/application/main/PlatformMath.cc
@@ -182,7 +182,7 @@
 #if ARM_DSP_AVAILABLE
         arm_cmplx_mag_squared_f32(ptrSrc, ptrDst, srcLen/2);
 #else /* ARM_DSP_AVAILABLE */
-        for (uint32_t j = 0; j < srcLen; ++j) {
+        for (uint32_t j = 0; j < srcLen/2; ++j) {
             const float real = *ptrSrc++;
             const float im = *ptrSrc++;
             *ptrDst++ = real*real + im*im;