diff --git a/c/src/lib/libcpu/powerpc/ChangeLog b/c/src/lib/libcpu/powerpc/ChangeLog
index e0af941606..8960571d19 100644
--- a/c/src/lib/libcpu/powerpc/ChangeLog
+++ b/c/src/lib/libcpu/powerpc/ChangeLog
@@ -1,3 +1,9 @@
+2007-12-10	Till Straumann <strauman@slac.stanford.edu>
+
+	* new-exceptions/bspsupport/ppc_exc_test.c: fixed
+	wrong type in argument (signed vs. unsigned)
+	compiler warning.
+
 2007-12-10	Till Straumann <strauman@slac.stanford.edu>
 
 	* Makefile.am: build new-exceptions/bspsupport for
diff --git a/c/src/lib/libcpu/powerpc/new-exceptions/bspsupport/ppc_exc_test.c b/c/src/lib/libcpu/powerpc/new-exceptions/bspsupport/ppc_exc_test.c
index ae38b08392..fa84c43866 100644
--- a/c/src/lib/libcpu/powerpc/new-exceptions/bspsupport/ppc_exc_test.c
+++ b/c/src/lib/libcpu/powerpc/new-exceptions/bspsupport/ppc_exc_test.c
@@ -155,7 +155,7 @@ typedef union { uint32_t u; uint8_t c[4]; } u32_a_t;
 
 /* exception handler; adds 1 to all register contents (except r1,r2,r13) */
 int
-handle_clobber_exc(BSP_Exception_frame *f, int vector)
+handle_clobber_exc(BSP_Exception_frame *f, unsigned vector)
 {
 int i;
 u32_a_t *p = (u32_a_t*)&f->GPR0;