diff --git a/src/main/common/filter.h b/src/main/common/filter.h
index dd8e7d014d..f7fe56b7e3 100644
--- a/src/main/common/filter.h
+++ b/src/main/common/filter.h
@@ -19,7 +19,7 @@
 
 // Don't use it on F1 and F3 to lower RAM usage
 // FIR/Denoise filter can be cleaned up in the future as it is rarely used and used to be experimental
-#if (defined(STM32F1) || defined(STM32F1))
+#if (defined(STM32F1) || defined(STM32F3))
 #define MAX_FIR_DENOISE_WINDOW_SIZE 1
 #else
 #define MAX_FIR_DENOISE_WINDOW_SIZE 120