diff --git a/src/lib/launchdetection/CatapultLaunchMethod.cpp b/src/lib/launchdetection/CatapultLaunchMethod.cpp
index 8a0e8a3bb3..6f233d52ad 100644
--- a/src/lib/launchdetection/CatapultLaunchMethod.cpp
+++ b/src/lib/launchdetection/CatapultLaunchMethod.cpp
@@ -41,7 +41,7 @@
 
 #include "CatapultLaunchMethod.h"
 #include <systemlib/err.h>
-#define __STDC_FORMAT_MACROS 1
+#define __STDC_FORMAT_MACROS
 #include <inttypes.h>
 
 namespace launchdetection