diff --git a/src/kernel/libroot/os/arch/ppc/Jamfile b/src/kernel/libroot/os/arch/ppc/Jamfile
index 22b8776be3..ab7b97ab1c 100644
--- a/src/kernel/libroot/os/arch/ppc/Jamfile
+++ b/src/kernel/libroot/os/arch/ppc/Jamfile
@@ -11,5 +11,5 @@ KernelMergeObject os_arch_$(OBOS_ARCH).o :
 
 MergeObjectFromObjects kernel_os_arch_$(OBOS_ARCH).o :
 	<$(SOURCE_GRIST)>atomic.o
-	<$(SOURCE_GRIST)>system_time.S
+	<$(SOURCE_GRIST)>system_time.o
 	;