diff --git a/SPIRV/GlslangToSpv.cpp b/SPIRV/GlslangToSpv.cpp
index 8eb06b7..6d9c7cf 100644
--- a/SPIRV/GlslangToSpv.cpp
+++ b/SPIRV/GlslangToSpv.cpp
@@ -2784,6 +2784,7 @@
         break;
 
     case glslang::EOpAtomicAdd:
+    case glslang::EOpAtomicSubtract:
     case glslang::EOpAtomicMin:
     case glslang::EOpAtomicMax:
     case glslang::EOpAtomicAnd:
@@ -2955,6 +2956,7 @@
             break;
 
         case glslang::EOpAtomicAdd:
+        case glslang::EOpAtomicSubtract:
         case glslang::EOpAtomicMin:
         case glslang::EOpAtomicMax:
         case glslang::EOpAtomicAnd:
@@ -6894,6 +6896,7 @@
                 builder.addCapability(spv::CapabilityAtomicFloat64AddEXT);
         }
         break;
+    case glslang::EOpAtomicSubtract:
     case glslang::EOpAtomicCounterSubtract:
         opCode = spv::OpAtomicISub;
         break;