diff --git a/tools/power/cpupower/Makefile b/tools/power/cpupower/Makefile
index cf397bd26d0..d875a74a3bd 100644
--- a/tools/power/cpupower/Makefile
+++ b/tools/power/cpupower/Makefile
@@ -253,7 +253,8 @@ clean:
 	 | xargs rm -f
 	-rm -f $(OUTPUT)cpupower
 	-rm -f $(OUTPUT)libcpupower.so*
-	-rm -rf $(OUTPUT)po/*.{gmo,pot}
+	-rm -rf $(OUTPUT)po/*.gmo
+	-rm -rf $(OUTPUT)po/*.pot
 	$(MAKE) -C bench O=$(OUTPUT) clean
 
 
diff --git a/tools/power/cpupower/debug/i386/Makefile b/tools/power/cpupower/debug/i386/Makefile
index 3ba158f0e28..c05cc0ac80c 100644
--- a/tools/power/cpupower/debug/i386/Makefile
+++ b/tools/power/cpupower/debug/i386/Makefile
@@ -26,7 +26,10 @@ $(OUTPUT)powernow-k8-decode: powernow-k8-decode.c
 all: $(OUTPUT)centrino-decode $(OUTPUT)dump_psb $(OUTPUT)intel_gsic $(OUTPUT)powernow-k8-decode
 
 clean:
-	rm -rf $(OUTPUT){centrino-decode,dump_psb,intel_gsic,powernow-k8-decode}
+	rm -rf $(OUTPUT)centrino-decode
+	rm -rf $(OUTPUT)dump_psb
+	rm -rf $(OUTPUT)intel_gsic
+	rm -rf $(OUTPUT)powernow-k8-decode
 
 install:
 	$(INSTALL) -d $(DESTDIR)${bindir}