diff --git a/build-config.sh b/build-config.sh
index 2db534f9..aa851700 100644
--- a/build-config.sh
+++ b/build-config.sh
@@ -224,6 +224,7 @@ include_core_vitaquake2
 include_core_vitaquake3
 include_core_boom3
 include_core_prboom
+include_core_ecwolf
 include_core_xrick
 include_core_openlara
 include_core_nxengine
diff --git a/rules.d/core-rules.sh b/rules.d/core-rules.sh
index ce867362..5eed528f 100644
--- a/rules.d/core-rules.sh
+++ b/rules.d/core-rules.sh
@@ -401,6 +401,13 @@ include_core_nxengine() {
 libretro_nxengine_name="NXEngine"
 libretro_nxengine_git_url="https://github.com/libretro/nxengine-libretro.git"
 
+include_core_ecwolf() {
+	register_module core "ecwolf"
+}
+libretro_ecwolf_name="ECWolf"
+libretro_ecwolf_git_url="https://github.com/libretro/ecwolf.git"
+libretro_ecwolf_build_platform="$FORMAT_COMPILER_TARGET_ALT"
+
 include_core_prboom() {
 	register_module core "prboom"
 }