diff --git a/configure.ac b/configure.ac
index c861e084..207796dc 100644
--- a/configure.ac
+++ b/configure.ac
@@ -14,6 +14,8 @@ AM_MAINTAINER_MODE
 
 AC_PREFIX_DEFAULT(/usr/local)
 
+PKG_PROG_PKG_CONFIG
+
 COMPILER_FLAGS
 
 AC_LANG_C