diff --git a/configure.ac b/configure.ac
index 7c16271d4..17ca28052 100644
--- a/configure.ac
+++ b/configure.ac
@@ -483,6 +483,9 @@ AH_BOTTOM([
 /* Under Windows we use the gettext code from libgpg-error.  */
 #define GPG_ERR_ENABLE_GETTEXT_MACROS
 
+/* Under WindowsCE we use the strerror replacement from libgpg-error.  */
+#define GPG_ERR_ENABLE_ERRNO_MACROS
+
 #endif /*GNUPG_CONFIG_H_INCLUDED*/
 ])