diff --git a/libguile/ChangeLog b/libguile/ChangeLog
index 38b656eb1..805cfa81d 100644
--- a/libguile/ChangeLog
+++ b/libguile/ChangeLog
@@ -1,3 +1,9 @@
+2008-07-04  Ludovic Courtès  <ludo@gnu.org>
+
+	* __scm.h (SCM_INTERNAL): Add `extern' so that these symbols are
+	not considered as "common" by GCC 4.3.  Reported by Patrick
+	Horgan <phorgan1@gmail.com>.
+
 2008-06-28  Ludovic Courtès  <ludo@gnu.org>
 
 	* Makefile.am (INCLUDES): Renamed to...
diff --git a/libguile/__scm.h b/libguile/__scm.h
index 76b444857..30077fd46 100644
--- a/libguile/__scm.h
+++ b/libguile/__scm.h
@@ -101,9 +101,9 @@
  * as having "internal" linkage.  */
 #if (defined __GNUC__) && \
   ((__GNUC__ >= 4) || (__GNUC__ == 3 && __GNUC_MINOR__ == 3))
-# define SCM_INTERNAL  __attribute__ ((__visibility__ ("internal")))
+# define SCM_INTERNAL  extern __attribute__ ((__visibility__ ("internal")))
 #else
-# define SCM_INTERNAL
+# define SCM_INTERNAL  extern
 #endif