diff --git a/Makefile.emscripten b/Makefile.emscripten
index 79f8c01da0..7e0c41314f 100644
--- a/Makefile.emscripten
+++ b/Makefile.emscripten
@@ -45,7 +45,7 @@ else
    CFLAGS += -O2
 endif
 
-CFLAGS += -Wall -Wno-unused-result -Wno-unused-variable -I. -std=gnu99
+CFLAGS += -Wall -Wno-unused-result -Wno-unused-variable -I. -Ilibretro-sdk/include -std=gnu99
 
 all: $(TARGET)