diff --git a/glslang/MachineIndependent/Scan.cpp b/glslang/MachineIndependent/Scan.cpp
index 66ac4a8..eaedbe8 100755
--- a/glslang/MachineIndependent/Scan.cpp
+++ b/glslang/MachineIndependent/Scan.cpp
@@ -683,7 +683,7 @@
     (*KeywordMap)["smooth"] =                  SMOOTH;
     (*KeywordMap)["flat"] =                    FLAT;
 #ifdef AMD_EXTENSIONS
-    (*KeywordMap)["__explicitInterpAMD"] =     __EXPLICITINTERPAMD;
+    (*KeywordMap)["__explicitInterpAMD"] =     EXPLICITINTERPAMD;
 #endif
     (*KeywordMap)["centroid"] =                CENTROID;
     (*KeywordMap)["precise"] =                 PRECISE;
@@ -1490,7 +1490,7 @@
         return keyword;
 
 #ifdef AMD_EXTENSIONS
-    case __EXPLICITINTERPAMD:
+    case EXPLICITINTERPAMD:
         if (parseContext.profile != EEsProfile && parseContext.version >= 450 &&
             parseContext.extensionTurnedOn(E_GL_AMD_shader_explicit_vertex_parameter))
             return keyword;
diff --git a/glslang/MachineIndependent/glslang.y b/glslang/MachineIndependent/glslang.y
index 4d16b2b..66a53d4 100755
--- a/glslang/MachineIndependent/glslang.y
+++ b/glslang/MachineIndependent/glslang.y
@@ -146,7 +146,7 @@
 %token <lex> F16VEC2 F16VEC3 F16VEC4 F16MAT2 F16MAT3 F16MAT4
 %token <lex> F32VEC2 F32VEC3 F32VEC4 F32MAT2 F32MAT3 F32MAT4
 %token <lex> F64VEC2 F64VEC3 F64VEC4 F64MAT2 F64MAT3 F64MAT4
-%token <lex> NOPERSPECTIVE FLAT SMOOTH LAYOUT __EXPLICITINTERPAMD
+%token <lex> NOPERSPECTIVE FLAT SMOOTH LAYOUT EXPLICITINTERPAMD
 
 %token <lex> MAT2X2 MAT2X3 MAT2X4
 %token <lex> MAT3X2 MAT3X3 MAT3X4
@@ -1135,7 +1135,7 @@
         $$.init($1.loc);
         $$.qualifier.nopersp = true;
     }
-    | __EXPLICITINTERPAMD {
+    | EXPLICITINTERPAMD {
 #ifdef AMD_EXTENSIONS
         parseContext.globalCheck($1.loc, "__explicitInterpAMD");
         parseContext.profileRequires($1.loc, ECoreProfile, 450, E_GL_AMD_shader_explicit_vertex_parameter, "explicit interpolation");
diff --git a/glslang/MachineIndependent/glslang_tab.cpp b/glslang/MachineIndependent/glslang_tab.cpp
index 96e245e..a79c480 100755
--- a/glslang/MachineIndependent/glslang_tab.cpp
+++ b/glslang/MachineIndependent/glslang_tab.cpp
@@ -236,7 +236,7 @@
     FLAT = 368,
     SMOOTH = 369,
     LAYOUT = 370,
-    __EXPLICITINTERPAMD = 371,
+    EXPLICITINTERPAMD = 371,
     MAT2X2 = 372,
     MAT2X3 = 373,
     MAT2X4 = 374,
@@ -981,7 +981,7 @@
   "F16VEC2", "F16VEC3", "F16VEC4", "F16MAT2", "F16MAT3", "F16MAT4",
   "F32VEC2", "F32VEC3", "F32VEC4", "F32MAT2", "F32MAT3", "F32MAT4",
   "F64VEC2", "F64VEC3", "F64VEC4", "F64MAT2", "F64MAT3", "F64MAT4",
-  "NOPERSPECTIVE", "FLAT", "SMOOTH", "LAYOUT", "__EXPLICITINTERPAMD",
+  "NOPERSPECTIVE", "FLAT", "SMOOTH", "LAYOUT", "EXPLICITINTERPAMD",
   "MAT2X2", "MAT2X3", "MAT2X4", "MAT3X2", "MAT3X3", "MAT3X4", "MAT4X2",
   "MAT4X3", "MAT4X4", "DMAT2X2", "DMAT2X3", "DMAT2X4", "DMAT3X2",
   "DMAT3X3", "DMAT3X4", "DMAT4X2", "DMAT4X3", "DMAT4X4", "F16MAT2X2",
diff --git a/glslang/MachineIndependent/glslang_tab.cpp.h b/glslang/MachineIndependent/glslang_tab.cpp.h
index 7cfb797..9085dd0 100644
--- a/glslang/MachineIndependent/glslang_tab.cpp.h
+++ b/glslang/MachineIndependent/glslang_tab.cpp.h
@@ -158,7 +158,7 @@
     FLAT = 368,
     SMOOTH = 369,
     LAYOUT = 370,
-    __EXPLICITINTERPAMD = 371,
+    EXPLICITINTERPAMD = 371,
     MAT2X2 = 372,
     MAT2X3 = 373,
     MAT2X4 = 374,