diff --git a/src/OpenGL/libEGL/BUILD.gn b/src/OpenGL/libEGL/BUILD.gn
index 1421911..cf86974 100644
--- a/src/OpenGL/libEGL/BUILD.gn
+++ b/src/OpenGL/libEGL/BUILD.gn
@@ -42,7 +42,7 @@
     } else if (is_clang) {
       defines += [ "EGLAPI=__attribute__((visibility(\"protected\"))) __attribute__((no_sanitize(\"function\")))" ]
     } else {
-      defines += [ "EGLAPI= " ]
+      defines += [ "EGLAPI=__attribute__((visibility(\"protected\")))" ]
     }
   }
 }
diff --git a/src/OpenGL/libGLESv2/BUILD.gn b/src/OpenGL/libGLESv2/BUILD.gn
index f71dc68..fc3ba3a 100644
--- a/src/OpenGL/libGLESv2/BUILD.gn
+++ b/src/OpenGL/libGLESv2/BUILD.gn
@@ -57,7 +57,7 @@
     } else if (is_clang) {
       defines += [ "GL_APICALL=__attribute__((visibility(\"protected\"))) __attribute__((no_sanitize(\"function\")))" ]
     } else {
-      defines += [ "GL_APICALL= " ]
+      defines += [ "GL_APICALL=__attribute__((visibility(\"protected\")))" ]
     }
   }
 }