diff --git a/src/gallium/auxiliary/pipe-loader/Makefile.am b/src/gallium/auxiliary/pipe-loader/Makefile.am
index 44917f37a4d..cb6035d85c9 100644
--- a/src/gallium/auxiliary/pipe-loader/Makefile.am
+++ b/src/gallium/auxiliary/pipe-loader/Makefile.am
@@ -3,6 +3,7 @@ include Makefile.sources
 AM_CPPFLAGS = $(DEFINES) \
 	$(VISIBILITY_CFLAGS) \
 	-I$(top_srcdir)/include \
+	-I$(top_srcdir)/src \
 	-I$(top_srcdir)/src/loader \
 	-I$(top_srcdir)/src/gallium/include \
 	-I$(top_srcdir)/src/gallium/auxiliary \