diff --git a/src/main/common/filter.c b/src/main/common/filter.c
index 72b5652914..5b580a14e1 100644
--- a/src/main/common/filter.c
+++ b/src/main/common/filter.c
@@ -33,7 +33,7 @@
 
 // NULL filter
 
-float nullFilterApply(const void *filter, float input)
+float nullFilterApply(void *filter, float input)
 {
     UNUSED(filter);
     return input;
diff --git a/src/main/common/filter.h b/src/main/common/filter.h
index a925f68864..0121c71b1d 100644
--- a/src/main/common/filter.h
+++ b/src/main/common/filter.h
@@ -62,9 +62,9 @@ typedef struct firFilter_s {
     uint8_t coeffsLength;
 } firFilter_t;
 
-typedef float (*filterApplyFnPtr)(const void *filter, float input);
+typedef float (*filterApplyFnPtr)(void *filter, float input);
 
-float nullFilterApply(const void *filter, float input);
+float nullFilterApply(void *filter, float input);
 
 void biquadFilterInitLPF(biquadFilter_t *filter, float filterFreq, uint32_t refreshRate);
 void biquadFilterInit(biquadFilter_t *filter, float filterFreq, uint32_t refreshRate, float Q, biquadFilterType_e filterType);