diff --git a/pymusic/Makefile.am b/pymusic/Makefile.am
index 098b6adf019144cc97a3b6487b67938355762b67..c65e6e652b53364c733077932c835c0e646fad29 100644
--- a/pymusic/Makefile.am
+++ b/pymusic/Makefile.am
@@ -22,7 +22,7 @@ pybuffer_la_LDFLAGS = -shared -module -avoid-version -export-dynamic $(MPI_LDFLA
 pymusic_la_CPPFLAGS = \
 	$(MPI_CPPFLAGS) \
 	$(PYMUSIC_CPPFLAGS) \
-	-I$(top_srcdir)/src
+	-I$(top_srcdir)/src -I$(top_builddir)/src
 
 pymusic_la_CXXFLAGS = \
 	$(PYMUSIC_CXXFLAGS) \