diff --git a/libretro-sdk/include/retro_inline.h b/libretro-sdk/include/retro_inline.h
index 2639148f7e..aa58d917d3 100644
--- a/libretro-sdk/include/retro_inline.h
+++ b/libretro-sdk/include/retro_inline.h
@@ -20,7 +20,7 @@
  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  */
 
-#ifndef __LIBRETRO_SDK_INLINE_H_
+#ifndef __LIBRETRO_SDK_INLINE_H
 #define __LIBRETRO_SDK_INLINE_H
 
 #if !defined(__cplusplus) && defined(_WIN32)