diff --git a/sci-electronics/kicad/kicad-5.0.0-r1.ebuild b/sci-electronics/kicad/kicad-5.0.0-r1.ebuild
index 18cae5de2535..e7e6b31d2cb2 100644
--- a/sci-electronics/kicad/kicad-5.0.0-r1.ebuild
+++ b/sci-electronics/kicad/kicad-5.0.0-r1.ebuild
@@ -87,7 +87,10 @@ src_configure() {
 		-DPYTHON_INCLUDE_DIR="$(python_get_includedir)"
 		-DPYTHON_LIBRARY="$(python_get_library_path)"
 	)
-	use occ && mycmakeargs+=( -DOCC_LIBRARY_DIR="${CASROOT}"/lib )
+	use occ && mycmakeargs+=(
+		-DOCC_INCLUDE_DIR="${CASROOT}"/include/opencascade
+		-DOCC_LIBRARY_DIR="${CASROOT}"/lib
+	)
 
 	cmake-utils_src_configure
 }