diff --git a/Test/120.vert b/Test/120.vert
index d276557..7b98492 100644
--- a/Test/120.vert
+++ b/Test/120.vert
@@ -201,3 +201,15 @@
 
 #define macr(A,B) A ## B
 int macr(qrs,tuv);
+
+layout(std140) uniform BlockName    // ERROR
+{
+    int test;
+};
+
+#extension GL_ARB_uniform_buffer_object : enable
+
+layout(std140) uniform BlockName
+{
+    int test;
+};
\ No newline at end of file
diff --git a/Test/baseResults/120.vert.out b/Test/baseResults/120.vert.out
index 5a91ed6..6c42b75 100644
--- a/Test/baseResults/120.vert.out
+++ b/Test/baseResults/120.vert.out
@@ -79,7 +79,8 @@
 ERROR: 0:195: 'gl_ModelViewMatrix' : identifiers starting with "gl_" are reserved 
 ERROR: 0:200: 'token pasting (##)' : not supported for this version or the enabled extensions 
 ERROR: 0:203: 'token pasting (##)' : not supported for this version or the enabled extensions 
-ERROR: 80 compilation errors.  No code generated.
+ERROR: 0:205: '' :  syntax error, unexpected IDENTIFIER
+ERROR: 81 compilation errors.  No code generated.
 
 
 Shader version: 120
diff --git a/glslang/MachineIndependent/ParseHelper.cpp b/glslang/MachineIndependent/ParseHelper.cpp
index 2688af7..b9ab5c8 100644
--- a/glslang/MachineIndependent/ParseHelper.cpp
+++ b/glslang/MachineIndependent/ParseHelper.cpp
@@ -7613,7 +7613,7 @@
     switch (qualifier.storage) {
     case EvqUniform:
         profileRequires(loc, EEsProfile, 300, nullptr, "uniform block");
-        profileRequires(loc, ENoProfile, 140, nullptr, "uniform block");
+        profileRequires(loc, ENoProfile, 140, E_GL_ARB_uniform_buffer_object, "uniform block");
         if (currentBlockQualifier.layoutPacking == ElpStd430 && ! currentBlockQualifier.isPushConstant())
             requireExtensions(loc, 1, &E_GL_EXT_scalar_block_layout, "std430 requires the buffer storage qualifier");
         break;
diff --git a/glslang/MachineIndependent/Versions.cpp b/glslang/MachineIndependent/Versions.cpp
index 7c68230..23f7423 100644
--- a/glslang/MachineIndependent/Versions.cpp
+++ b/glslang/MachineIndependent/Versions.cpp
@@ -193,6 +193,7 @@
     extensionBehavior[E_GL_ARB_shader_viewport_layer_array]  = EBhDisable;
     extensionBehavior[E_GL_ARB_fragment_shader_interlock]    = EBhDisable;
     extensionBehavior[E_GL_ARB_shader_clock]                 = EBhDisable;
+    extensionBehavior[E_GL_ARB_uniform_buffer_object]        = EBhDisable;
     extensionBehavior[E_GL_ARB_sample_shading]               = EBhDisable;
 
     extensionBehavior[E_GL_KHR_shader_subgroup_basic]            = EBhDisable;
@@ -401,6 +402,7 @@
 //            "#define GL_ARB_cull_distance 1\n"    // present for 4.5, but need extension control over block members
             "#define GL_ARB_post_depth_coverage 1\n"
             "#define GL_ARB_fragment_shader_interlock 1\n"
+            "#define GL_ARB_uniform_buffer_object 1\n"
             "#define GL_EXT_shader_non_constant_global_initializers 1\n"
             "#define GL_EXT_shader_image_load_formatted 1\n"
             "#define GL_EXT_post_depth_coverage 1\n"
diff --git a/glslang/MachineIndependent/Versions.h b/glslang/MachineIndependent/Versions.h
index 6d8365f..d319a2d 100644
--- a/glslang/MachineIndependent/Versions.h
+++ b/glslang/MachineIndependent/Versions.h
@@ -145,6 +145,7 @@
 const char* const E_GL_ARB_shader_viewport_layer_array  = "GL_ARB_shader_viewport_layer_array";
 const char* const E_GL_ARB_fragment_shader_interlock    = "GL_ARB_fragment_shader_interlock";
 const char* const E_GL_ARB_shader_clock                 = "GL_ARB_shader_clock";
+const char* const E_GL_ARB_uniform_buffer_object        = "GL_ARB_uniform_buffer_object";
 const char* const E_GL_ARB_sample_shading               = "GL_ARB_sample_shading";
 
 const char* const E_GL_KHR_shader_subgroup_basic            = "GL_KHR_shader_subgroup_basic";