diff --git a/cddl/compat/opensolaris/include/stdlib.h b/cddl/compat/opensolaris/include/stdlib.h
--- a/cddl/compat/opensolaris/include/stdlib.h
+++ b/cddl/compat/opensolaris/include/stdlib.h
@@ -32,6 +32,4 @@
 #ifndef _COMPAT_OPENSOLARIS_STDLIB_H_
 #define _COMPAT_OPENSOLARIS_STDLIB_H_
 
-#define getexecname	getprogname
-
 #endif