diff --git a/libguile/version.h.in b/libguile/version.h.in
index fc79e63f0..6d696bf7c 100644
--- a/libguile/version.h.in
+++ b/libguile/version.h.in
@@ -48,14 +48,15 @@
 
 
 
-#define SCM_MAJOR_VERSION @GUILE_MAJOR_VERSION@
-#define SCM_MINOR_VERSION @GUILE_MINOR_VERSION@
-#define SCM_MICRO_VERSION @GUILE_MICRO_VERSION@
+#define SCM_MAJOR_VERSION @-GUILE_MAJOR_VERSION-@
+#define SCM_MINOR_VERSION @-GUILE_MINOR_VERSION-@
+#define SCM_MICRO_VERSION @-GUILE_MICRO_VERSION-@
 
 extern SCM scm_major_version (void);
 extern SCM scm_minor_version (void);
 extern SCM scm_micro_version (void);
 extern SCM scm_version (void);
+extern SCM scm_effective_version (void);
 extern void scm_init_version (void);
 
 #endif  /* VERSIONH */