diff -ur a/Makefile b/Makefile
--- a/Makefile	2021-08-04 17:14:19.000000000 +0100
+++ b/Makefile	2021-08-05 22:13:20.509655072 +0100
@@ -35,9 +35,9 @@
 DEFAULT_LIBS=-L/usr/X11R6/lib -L/usr/local/lib -lX11 -lXtst -lXinerama -lxkbcommon
 DEFAULT_INC=-I/usr/X11R6/include -I/usr/local/include
 
-XDOTOOL_LIBS=$(shell pkg-config --libs x11 2> /dev/null || echo "$(DEFAULT_LIBS)")  $(shell sh platform.sh extralibs)
-LIBXDO_LIBS=$(shell pkg-config --libs xi x11 xtst xinerama xkbcommon 2> /dev/null || echo "$(DEFAULT_LIBS)")
-INC=$(shell pkg-config --cflags xi x11 xtst xinerama xkbcommon 2> /dev/null || echo "$(DEFAULT_INC)")
+XDOTOOL_LIBS=$(shell $(PKG_CONFIG) --libs x11 2> /dev/null || echo "$(DEFAULT_LIBS)")  $(shell sh platform.sh extralibs)
+LIBXDO_LIBS=$(shell $(PKG_CONFIG) --libs xi x11 xtst xinerama xkbcommon 2> /dev/null || echo "$(DEFAULT_LIBS)")
+INC=$(shell $(PKG_CONFIG) --cflags xi x11 xtst xinerama xkbcommon 2> /dev/null || echo "$(DEFAULT_INC)")
 CFLAGS+=-std=c99 $(INC)
 
 CMDOBJS= cmd_click.o cmd_mousemove.o cmd_mousemove_relative.o cmd_mousedown.o \