--- a/Makefile
+++ b/Makefile
@@ -133,7 +133,7 @@ ifeq ($(filter %clean %distclean, $(MAKECMDGOALS)), )
 endif
 
 $(PKGCONFIG): config.mk
-	sed 's|PREFIX|$(PREFIX)|;s|VERSION|$(VERSION)|' < imagequant.pc.in > $(PKGCONFIG)
+	sed 's|PREFIX|$(PREFIX)|;s|VERSION|$(VERSION)|;s|LIBDIR|$(LIBDIR)|' < imagequant.pc.in > $(PKGCONFIG)
 
 .PHONY: all static shared clean dist distclean dll java cargo
 .DELETE_ON_ERROR:
--- a/imagequant.pc.in
+++ b/imagequant.pc.in
@@ -1,6 +1,6 @@
 prefix=PREFIX
 includedir=${prefix}/include
-libdir=${prefix}/lib
+libdir=LIBDIR
 
 Name: imagequant
 Description: Small, portable C library for high-quality conversion of RGBA images to 8-bit indexed-color (palette) images.