diff --git a/gcc/config/i386/xm-os2.h b/gcc/config/i386/xm-os2.h
index 22fb142dfb2..d1d3699f0e7 100644
--- a/gcc/config/i386/xm-os2.h
+++ b/gcc/config/i386/xm-os2.h
@@ -51,5 +51,6 @@ int spawnvp (int modeflag, char *path, char *argv[]);
 #endif
 
 #define EXECUTABLE_SUFFIX ".exe"
+#define OBJECT_SUFFIX ".obj"
 
 #include "i386/xm-i386.h"