diff --git a/Makefile.libretro b/Makefile.libretro
index 19c7d17..ea4da75 100644
--- a/Makefile.libretro
+++ b/Makefile.libretro
@@ -444,8 +444,8 @@ endif
 
 # Emscripten
 else ifeq ($(platform), emscripten)
-	EXT    ?= bc
-	TARGET := $(TARGET_NAME)_libretro_$(platform).$(EXT)
+   EXT    := bc
+   TARGET := $(TARGET_NAME)_libretro_$(platform).$(EXT)
    STATIC_LINKING = 1
 
 # Windows MSVC 2003 Xbox 1