diff --git a/glm/ext/scalar_ulp.hpp b/glm/ext/scalar_ulp.hpp
index f0db0d0a..90e177da 100644
--- a/glm/ext/scalar_ulp.hpp
+++ b/glm/ext/scalar_ulp.hpp
@@ -17,6 +17,7 @@
 
 // Dependencies
 #include "../ext/scalar_int_sized.hpp"
+#include "../common.hpp"
 #include "../detail/qualifier.hpp"
 
 #if GLM_MESSAGES == GLM_ENABLE && !defined(GLM_EXT_INCLUDED)