diff --git a/SPIRV/SpvBuilder.cpp b/SPIRV/SpvBuilder.cpp
index 3375ec4fa..8355d833b 100755
--- a/SPIRV/SpvBuilder.cpp
+++ b/SPIRV/SpvBuilder.cpp
@@ -565,6 +565,7 @@ Id Builder::makeAccelerationStructureNVType()
     Instruction *type;
     if (groupedTypes[OpTypeAccelerationStructureNV].size() == 0) {
         type = new Instruction(getUniqueId(), NoType, OpTypeAccelerationStructureNV);
+        groupedTypes[OpTypeAccelerationStructureNV].push_back(type);
         constantsTypesGlobals.push_back(std::unique_ptr<Instruction>(type));
         module.mapInstruction(type);
     } else {
diff --git a/Test/baseResults/spv.RayGenShader.rgen.out b/Test/baseResults/spv.RayGenShader.rgen.out
index db6ecfc95..7e15f2699 100644
--- a/Test/baseResults/spv.RayGenShader.rgen.out
+++ b/Test/baseResults/spv.RayGenShader.rgen.out
@@ -1,7 +1,7 @@
 spv.RayGenShader.rgen
 // Module Version 10000
 // Generated by (magic number): 80007
-// Id's are bound by 60
+// Id's are bound by 61
 
                               Capability RayTracingNV
                               Extension  "SPV_NV_ray_tracing"
@@ -17,21 +17,24 @@ spv.RayGenShader.rgen
                               Name 20  "sx"
                               Name 21  "gl_LaunchSizeNV"
                               Name 24  "sy"
-                              Name 29  "accNV"
+                              Name 29  "accNV0"
                               Name 48  "block"
                               MemberName 48(block) 0  "arr"
                               MemberName 48(block) 1  "pad"
                               Name 50  ""
                               Name 56  "payload"
+                              Name 60  "accNV1"
                               Decorate 11(gl_LaunchIDNV) BuiltIn LaunchIdNV
                               Decorate 21(gl_LaunchSizeNV) BuiltIn LaunchSizeNV
-                              Decorate 29(accNV) DescriptorSet 0
-                              Decorate 29(accNV) Binding 0
+                              Decorate 29(accNV0) DescriptorSet 0
+                              Decorate 29(accNV0) Binding 0
                               Decorate 46 ArrayStride 4
                               MemberDecorate 48(block) 0 Offset 0
                               MemberDecorate 48(block) 1 Offset 16
                               Decorate 48(block) BufferBlock
                               Decorate 56(payload) Location 0
+                              Decorate 60(accNV1) DescriptorSet 0
+                              Decorate 60(accNV1) Binding 1
                2:             TypeVoid
                3:             TypeFunction 2
                6:             TypeInt 32 0
@@ -45,7 +48,7 @@ spv.RayGenShader.rgen
 21(gl_LaunchSizeNV):     10(ptr) Variable Input
               27:             TypeAccelerationStructureNV
               28:             TypePointer UniformConstant 27
-       29(accNV):     28(ptr) Variable UniformConstant
+      29(accNV0):     28(ptr) Variable UniformConstant
               35:             TypeFloat 32
               36:             TypeVector 35(float) 3
               37:   35(float) Constant 0
@@ -68,6 +71,7 @@ spv.RayGenShader.rgen
               55:             TypePointer RayPayloadNV 47(fvec4)
      56(payload):     55(ptr) Variable RayPayloadNV
               58:             TypePointer ShaderRecordBufferNV 47(fvec4)
+      60(accNV1):     28(ptr) Variable UniformConstant
          4(main):           2 Function None 3
                5:             Label
            8(lx):      7(ptr) Variable Function
@@ -86,7 +90,7 @@ spv.RayGenShader.rgen
               25:     13(ptr) AccessChain 21(gl_LaunchSizeNV) 17
               26:      6(int) Load 25
                               Store 24(sy) 26
-              30:          27 Load 29(accNV)
+              30:          27 Load 29(accNV0)
               31:      6(int) Load 8(lx)
               32:      6(int) Load 16(ly)
               33:      6(int) Load 20(sx)
diff --git a/Test/spv.RayGenShader.rgen b/Test/spv.RayGenShader.rgen
index 68f92b22d..c36cae46a 100644
--- a/Test/spv.RayGenShader.rgen
+++ b/Test/spv.RayGenShader.rgen
@@ -1,6 +1,7 @@
 #version 460
 #extension GL_NV_ray_tracing : enable
-layout(binding = 0, set = 0) uniform accelerationStructureNV accNV;
+layout(binding = 0, set = 0) uniform accelerationStructureNV accNV0;
+layout(binding = 1, set = 0) uniform accelerationStructureNV accNV1; // Unused
 layout(location = 0) rayPayloadNV vec4 payload;
 layout(shaderRecordNV) buffer block
 {
@@ -13,7 +14,7 @@ void main()
     uint ly = gl_LaunchIDNV.y;
     uint sx = gl_LaunchSizeNV.x;
     uint sy = gl_LaunchSizeNV.y;
-    traceNV(accNV, lx, ly, sx, sy, 0u, vec3(0.0f), 0.5f, vec3(1.0f), 0.75f, 1);
+    traceNV(accNV0, lx, ly, sx, sy, 0u, vec3(0.0f), 0.5f, vec3(1.0f), 0.75f, 1);
     arr[3] = 1.0f;
     pad = payload;
 }