diff --git a/configure.ac b/configure.ac
index 8e593324..2e50d3ef 100644
--- a/configure.ac
+++ b/configure.ac
@@ -28,6 +28,7 @@ AC_CONFIG_HEADERS([config.h])
 AC_CONFIG_SRCDIR([Makefile.am])
 AC_CONFIG_MACRO_DIR([m4])
 AC_CONFIG_AUX_DIR([build-aux])
+PKG_PROG_PKG_CONFIG
 
 # Require xorg-macros minimum of 1.12 for XORG_WITH_XSLTPROC
 m4_ifndef([XORG_MACROS_VERSION],