diff --git a/Makefile.vars b/Makefile.vars
index efb2d10..ee26812 100755
--- a/Makefile.vars
+++ b/Makefile.vars
@@ -114,9 +114,9 @@ define get-binary-sources
 	-printf "%P\n" | sort))
 
 # get the flags
- CFLAGS_$1 := $(CFLAGS) $(shell pkg-config $(LIBS_$1) --cflags 2>/dev/null) \
+ CFLAGS_$1 := $(CFLAGS) $(shell $(PKGCONFIG) $(LIBS_$1) --cflags 2>/dev/null) \
 	-D BIN="$1$(if $(FOR_WINDOWS),.exe)"
- LDFLAGS_$1 := $(LDFLAGS) $(shell pkg-config $(LIBS_$1) --libs 2>/dev/null)
+ LDFLAGS_$1 := $(LDFLAGS) $(shell $(PKGCONFIG) $(LIBS_$1) --libs 2>/dev/null)
 endef
 $(foreach bin,$(BINARIES), \
 $(eval $(call get-binary-libs,$(bin))))