diff --git a/src/mesa/main/externalobjects.c b/src/mesa/main/externalobjects.c
index fd593fb6d7e..a300e768d86 100644
--- a/src/mesa/main/externalobjects.c
+++ b/src/mesa/main/externalobjects.c
@@ -1177,7 +1177,7 @@ _mesa_ImportSemaphoreWin32HandleEXT(GLuint semaphore,
 
    const char *func = "glImportSemaphoreWin32HandleEXT";
 
-   if (!ctx->Extensions.EXT_semaphore_win32) {
+   if (!_mesa_has_EXT_semaphore_win32(ctx)) {
       _mesa_error(ctx, GL_INVALID_OPERATION, "%s(unsupported)", func);
       return;
    }
@@ -1221,7 +1221,7 @@ _mesa_ImportSemaphoreWin32NameEXT(GLuint semaphore,
 
    const char *func = "glImportSemaphoreWin32HandleEXT";
 
-   if (!ctx->Extensions.EXT_semaphore_win32) {
+   if (!_mesa_has_EXT_semaphore_win32(ctx)) {
       _mesa_error(ctx, GL_INVALID_OPERATION, "%s(unsupported)", func);
       return;
    }
diff --git a/src/mesa/main/get.c b/src/mesa/main/get.c
index 5e203810fd3..fe6b6019aff 100644
--- a/src/mesa/main/get.c
+++ b/src/mesa/main/get.c
@@ -2929,7 +2929,7 @@ find_value_indexed(const char *func, GLenum pname, GLuint index, union value *v)
       return TYPE_INT_4;
    /* GL_EXT_memory_object_win32 */
    case GL_DEVICE_LUID_EXT:
-      if (!_mesa_has_EXT_memory_object_win32(ctx) && !ctx->Extensions.EXT_semaphore_win32)
+      if (!_mesa_has_EXT_memory_object_win32(ctx) && !_mesa_has_EXT_semaphore_win32(ctx))
          goto invalid_enum;
       if (index >= 1)
          goto invalid_value;