--- a/Makefile
+++ b/Makefile
@@ -60,7 +60,7 @@
 endif
 
-LIB_CFLAGS=$(shell pkg-config --cflags --silence-errors $(PKG_GTK) $(PKG_WNCK) lua5.1 || pkg-config --cflags $(PKG_GTK) $(PKG_WNCK) lua)
+LIB_CFLAGS=$(shell ${PKG_CONFIG} --cflags $(PKG_GTK) $(PKG_WNCK) lua)
 STD_LDFLAGS=
-LIBS=-lX11 $(shell pkg-config --libs --silence-errors $(PKG_GTK) $(PKG_WNCK) lua5.1 || pkg-config --libs $(PKG_GTK) $(PKG_WNCK) lua)
+LIBS=-lX11 $(shell ${PKG_CONFIG} --libs $(PKG_GTK) $(PKG_WNCK) lua)
 
 LOCAL_CFLAGS=$(STD_CFLAGS) $(DEPRECATED) $(CFLAGS) $(LIB_CFLAGS)