diff --git a/evolution-data-server.spec b/evolution-data-server.spec
index 0aa7010..e91d231 100644
--- a/evolution-data-server.spec
+++ b/evolution-data-server.spec
@@ -205,7 +205,7 @@ fi
 %endif
 
 # Regenerate configure to pick up configure.in and acinclude.m4 changes.
-aclocal
+aclocal -I m4
 autoheader
 automake
 libtoolize