diff --git a/glslang/MachineIndependent/gl_types.h b/glslang/MachineIndependent/gl_types.h
index b9372d4bb..d6c939374 100644
--- a/glslang/MachineIndependent/gl_types.h
+++ b/glslang/MachineIndependent/gl_types.h
@@ -49,9 +49,9 @@
 #define GL_INT64_VEC4_ARB                 0x8FEB
 
 #define GL_UNSIGNED_INT64_ARB             0x140F
-#define GL_UNSIGNED_INT64_VEC2_ARB        0x8FE5
-#define GL_UNSIGNED_INT64_VEC3_ARB        0x8FE6
-#define GL_UNSIGNED_INT64_VEC4_ARB        0x8FE7
+#define GL_UNSIGNED_INT64_VEC2_ARB        0x8FF5
+#define GL_UNSIGNED_INT64_VEC3_ARB        0x8FF6
+#define GL_UNSIGNED_INT64_VEC4_ARB        0x8FF7
 #define GL_UNSIGNED_INT16_VEC2_NV         0x8FF1
 #define GL_UNSIGNED_INT16_VEC3_NV         0x8FF2
 #define GL_UNSIGNED_INT16_VEC4_NV         0x8FF3
diff --git a/glslang/MachineIndependent/reflection.cpp b/glslang/MachineIndependent/reflection.cpp
index 9870a400b..9ea48c452 100644
--- a/glslang/MachineIndependent/reflection.cpp
+++ b/glslang/MachineIndependent/reflection.cpp
@@ -907,8 +907,8 @@ public:
             case EbtFloat16:    return GL_FLOAT16_VEC2_NV             + offset;
             case EbtInt:        return GL_INT_VEC2                    + offset;
             case EbtUint:       return GL_UNSIGNED_INT_VEC2           + offset;
-            case EbtInt64:      return GL_INT64_ARB                   + offset;
-            case EbtUint64:     return GL_UNSIGNED_INT64_ARB          + offset;
+            case EbtInt64:      return GL_INT64_VEC2_ARB              + offset;
+            case EbtUint64:     return GL_UNSIGNED_INT64_VEC2_ARB     + offset;
             case EbtBool:       return GL_BOOL_VEC2                   + offset;
             case EbtAtomicUint: return GL_UNSIGNED_INT_ATOMIC_COUNTER + offset;
             default:            return 0;