diff --git a/armsrc/Standalone/hf_colin.c b/armsrc/Standalone/hf_colin.c
index 1dab49959..ab5d68ea6 100644
--- a/armsrc/Standalone/hf_colin.c
+++ b/armsrc/Standalone/hf_colin.c
@@ -961,7 +961,7 @@ static int saMifareCSetBlock(uint32_t arg0, uint32_t arg1, uint32_t arg2, const
     if (workFlags & 0x08) {
         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
         //  clear_trace();
-        set_tracing(FALSE);
+        set_tracing(false);
     }
 
     while (true) {
diff --git a/armsrc/Standalone/hf_colin.h b/armsrc/Standalone/hf_colin.h
index fa8730d98..1bb59c2a8 100644
--- a/armsrc/Standalone/hf_colin.h
+++ b/armsrc/Standalone/hf_colin.h
@@ -19,10 +19,6 @@
 #include <stdbool.h>
 #include <stddef.h>
 
-#ifndef FALSE
-#define FALSE 0
-#endif
-
 #ifndef __HF_COLIN_H
 #define __HF_COLIN_H