diff --git a/apps/openmw/mwscript/dialogueextensions.cpp b/apps/openmw/mwscript/dialogueextensions.cpp
index 178485f78..fec539d3e 100644
--- a/apps/openmw/mwscript/dialogueextensions.cpp
+++ b/apps/openmw/mwscript/dialogueextensions.cpp
@@ -136,6 +136,7 @@ namespace MWScript
         const int opcodeAddTopic = 0x200013a;
         const int opcodeChoice = 0x2000a;
         const int opcodeForceGreeting = 0x200014f;
+        const int opcodeForceGreetingExplicit = 0x2000150;
 
         void registerExtensions (Compiler::Extensions& extensions)
         {
@@ -144,7 +145,9 @@ namespace MWScript
             extensions.registerFunction ("getjournalindex", 'l', "c", opcodeGetJournalIndex);
             extensions.registerInstruction ("addtopic", "S" , opcodeAddTopic);
             extensions.registerInstruction ("choice", "/SlSlSlSlSlSlSlSlSlSlSlSlSlSlSlSl", opcodeChoice);
-            extensions.registerInstruction("forcegreeting","",-1,opcodeForceGreeting);
+            extensions.registerInstruction("forcegreeting","",opcodeForceGreeting);
+            extensions.registerInstruction("forcegreeting","",opcodeForceGreeting,
+                opcodeForceGreetingExplicit);
         }
 
         void installOpcodes (Interpreter::Interpreter& interpreter)
@@ -154,7 +157,8 @@ namespace MWScript
             interpreter.installSegment5 (opcodeGetJournalIndex, new OpGetJournalIndex);
             interpreter.installSegment5 (opcodeAddTopic, new OpAddTopic);
             interpreter.installSegment3 (opcodeChoice,new OpChoice);
-            interpreter.installSegment5 (opcodeForceGreeting, new OpForceGreeting<ExplicitRef>);
+            interpreter.installSegment5 (opcodeForceGreeting, new OpForceGreeting<ImplicitRef>);
+            interpreter.installSegment5 (opcodeForceGreetingExplicit, new OpForceGreeting<ExplicitRef>);
         }
     }
 
diff --git a/apps/openmw/mwscript/docs/vmformat.txt b/apps/openmw/mwscript/docs/vmformat.txt
index 9155746ed..58960aac4 100644
--- a/apps/openmw/mwscript/docs/vmformat.txt
+++ b/apps/openmw/mwscript/docs/vmformat.txt
@@ -143,4 +143,5 @@ op 0x200014c: GetSpell, explicit reference
 op 0x200014d: ModDisposition
 op 0x200014e: ModDisposition, explicit reference
 op 0x200014f: ForceGreeting
-opcodes 0x200015-0x3ffffff unused
+op 0x2000150: ForceGreeting, explicit reference
+opcodes 0x2000151-0x3ffffff unused