diff --git a/usermods/audioreactive/audio_reactive.h b/usermods/audioreactive/audio_reactive.h
index 731f96c5..70a47e4a 100644
--- a/usermods/audioreactive/audio_reactive.h
+++ b/usermods/audioreactive/audio_reactive.h
@@ -455,11 +455,11 @@ static bool alocateFFTBuffers(void) {
 
   if (vReal) free(vReal); // should not happen
   if (vImag) free(vImag); // should not happen
-  if ((vReal = (float*) calloc(sizeof(float), samplesFFT)) == nullptr) return false; // calloc or die
-  if ((vImag = (float*) calloc(sizeof(float), samplesFFT)) == nullptr) return false;
+  if ((vReal = (float*) calloc(samplesFFT, sizeof(float))) == nullptr) return false; // calloc or die
+  if ((vImag = (float*) calloc(samplesFFT, sizeof(float))) == nullptr) return false;
 #ifdef FFT_MAJORPEAK_HUMAN_EAR
   if (pinkFactors) free(pinkFactors);
-  if ((pinkFactors = (float*) calloc(sizeof(float), samplesFFT)) == nullptr) return false;
+  if ((pinkFactors = (float*) calloc(samplesFFT, sizeof(float))) == nullptr) return false;
 #endif
 
   #ifdef SR_DEBUG
@@ -510,7 +510,7 @@ void FFTcode(void * parameter)
   static float* oldSamples = nullptr; // previous 50% of samples
   static bool haveOldSamples = false; // for sliding window FFT
   bool usingOldSamples = false;
-  if (!oldSamples) oldSamples = (float*) calloc(sizeof(float), samplesFFT_2); // allocate on first run
+  if (!oldSamples) oldSamples = (float*) calloc(samplesFFT_2, sizeof(float)); // allocate on first run
   if (!oldSamples) { disableSoundProcessing = true; return; }                 // no memory -> die
 #endif
 
@@ -526,7 +526,7 @@ void FFTcode(void * parameter)
   // recommended version optimized by @softhack007 (API version 1.9)
   #if defined(WLED_ENABLE_HUB75MATRIX) && defined(CONFIG_IDF_TARGET_ESP32)
     static float* windowWeighingFactors = nullptr;
-    if (!windowWeighingFactors) windowWeighingFactors = (float*) calloc(sizeof(float), samplesFFT); // cache for FFT windowing factors - use heap
+    if (!windowWeighingFactors) windowWeighingFactors = (float*) calloc(samplesFFT, sizeof(float)); // cache for FFT windowing factors - use heap
   #else
     static float windowWeighingFactors[samplesFFT] = {0.0f};                                        // cache for FFT windowing factors - use global RAM
   #endif
diff --git a/wled00/FX_fcn.cpp b/wled00/FX_fcn.cpp
index 2af3cb9e..136865ec 100644
--- a/wled00/FX_fcn.cpp
+++ b/wled00/FX_fcn.cpp
@@ -125,7 +125,7 @@ void Segment::allocLeds() {
     portEXIT_CRITICAL(&ledsrgb_mux);
 
     if (oldLedsRgb) free(oldLedsRgb);   // we need a bigger buffer, so free the old one first
-    CRGB* newLedsRgb = (CRGB*)calloc(1, size);   // WLEDMM This is an OS call, so we should not wrap it in portEnterCRITICAL
+    CRGB* newLedsRgb = (CRGB*)calloc(size, 1);   // WLEDMM This is an OS call, so we should not wrap it in portEnterCRITICAL
 
     portENTER_CRITICAL(&ledsrgb_mux);
     ledsrgb = newLedsRgb;