diff --git a/libgimpmath/Makefile.am b/libgimpmath/Makefile.am
index e23a38e7a9..48a86ba67b 100644
--- a/libgimpmath/Makefile.am
+++ b/libgimpmath/Makefile.am
@@ -65,6 +65,7 @@ libgimpmath_@GIMP_API_VERSION@_la_SOURCES = \
 	$(libgimpmath_introspectable)
 
 libgimpmathinclude_HEADERS = \
+	$(top_srcdir)/libgimpmath/gimpmath.h	\
 	$(libgimpmath_introspectable_headers)
 
 libgimpmath_@GIMP_API_VERSION@_la_LDFLAGS = \
diff --git a/libgimpmath/Makefile.gi b/libgimpmath/Makefile.gi
index 69c5268d61..6ff978d7ef 100644
--- a/libgimpmath/Makefile.gi
+++ b/libgimpmath/Makefile.gi
@@ -1,7 +1,6 @@
 # Introspectable sources for libgimpmath
 #
 libgimpmath_introspectable_headers = \
-	$(top_srcdir)/libgimpmath/gimpmath.h		\
 	$(top_srcdir)/libgimpmath/gimpmathtypes.h	\
 	$(top_srcdir)/libgimpmath/gimpmatrix.h		\
 	$(top_srcdir)/libgimpmath/gimpvector.h