diff --git a/src/cpp/viper/utils/FIR.cpp b/src/cpp/viper/utils/FIR.cpp
index 1ceb808..996390b 100644
--- a/src/cpp/viper/utils/FIR.cpp
+++ b/src/cpp/viper/utils/FIR.cpp
@@ -10,7 +10,7 @@ FIR::~FIR() {
     delete this->block;
 }
 
-void FIR::FilterSamples(int *samples, uint32_t size) {
+void FIR::FilterSamples(float *samples, uint32_t size) {
     this->FilterSamplesInterleaved(samples, size, 1);
 }
 
diff --git a/src/cpp/viper/utils/FIR.h b/src/cpp/viper/utils/FIR.h
index 9962605..e8b8806 100644
--- a/src/cpp/viper/utils/FIR.h
+++ b/src/cpp/viper/utils/FIR.h
@@ -7,7 +7,7 @@ public:
     FIR();
     ~FIR();
 
-    void FilterSamples(int *samples, uint32_t size);
+    void FilterSamples(float *samples, uint32_t size);
     void FilterSamplesInterleaved(float *samples, uint32_t size, uint32_t channels);
     int GetBlockLength();
     int LoadCoefficients(const float *coeffs, uint32_t coeffsize, int blockLength);