diff --git a/src/lix-base.pc.in b/src/lix-base.pc.in
index 925a7753a..0c2e78bd3 100644
--- a/src/lix-base.pc.in
+++ b/src/lix-base.pc.in
@@ -5,4 +5,4 @@ includedir=@includedir@
 Name: Lix base
 Description: Lix Package Manager (config.hh fixup)
 Version: @PACKAGE_VERSION@
-Cflags: -I${includedir}/lix
+Cflags: -I${includedir}/lix -I${includedir}