diff --git a/c/src/lib/libbsp/powerpc/mvme3100/ChangeLog b/c/src/lib/libbsp/powerpc/mvme3100/ChangeLog
index 2756cdfa8b..01164adc95 100644
--- a/c/src/lib/libbsp/powerpc/mvme3100/ChangeLog
+++ b/c/src/lib/libbsp/powerpc/mvme3100/ChangeLog
@@ -1,3 +1,8 @@
+2011-02-11	Ralf Corsépius <ralf.corsepius@rtems.org>
+
+	* network/tsec.c:
+	Use "__asm__" instead of "asm" for improved c99-compliance.
+
 2011-02-02	Ralf Corsépius <ralf.corsepius@rtems.org>
 
 	* configure.ac: Require autoconf-2.68, automake-1.11.1.
diff --git a/c/src/lib/libbsp/powerpc/mvme3100/network/tsec.c b/c/src/lib/libbsp/powerpc/mvme3100/network/tsec.c
index 657dae9e94..d2b8464cfc 100644
--- a/c/src/lib/libbsp/powerpc/mvme3100/network/tsec.c
+++ b/c/src/lib/libbsp/powerpc/mvme3100/network/tsec.c
@@ -442,7 +442,7 @@ static inline void membarrier(void)
 	asm volatile("sync":::"memory");
 }
 
-#define EIEIO(mem) do { asm volatile("eieio"); } while (0)
+#define EIEIO(mem) do { __asm__ volatile("eieio"); } while (0)
 
 #else
 #error "memory barrier not implemented for your CPU architecture"