diff --git a/docs/rh-log.txt b/docs/rh-log.txt
index b1dd39e1e4..35675b1c51 100644
--- a/docs/rh-log.txt
+++ b/docs/rh-log.txt
@@ -1,4 +1,5 @@
 June 11, 2008 (Changes by Graf Zahl)
+- Fixed: SBARINFO's popup code used 1-based indices to address a C++ array.
 - Fixed: ACS's ChangeSky command didn't clean up the stack.
 - Fixed: Wall scrolling interpolations incremented their reference count twice.
 - Fixed: Before a level's thinkers are loaded all previous interpolations must
diff --git a/src/g_shared/sbarinfo_display.cpp b/src/g_shared/sbarinfo_display.cpp
index 84b9463443..04742c047c 100644
--- a/src/g_shared/sbarinfo_display.cpp
+++ b/src/g_shared/sbarinfo_display.cpp
@@ -246,8 +246,8 @@ void DSBarInfo::Draw (EHudState state)
 			popbar = STBAR_POPUPKEYS;
 		else if(currentPopup == POP_Status)
 			popbar = STBAR_POPUPSTATUS;
-		doCommands(SBarInfoScript->huds[popbar], SBarInfoScript->popups[currentPopup].getXOffset(), SBarInfoScript->popups[currentPopup].getYOffset(),
-			SBarInfoScript->popups[currentPopup].getAlpha(SBarInfoScript->huds[popbar].alpha));
+		doCommands(SBarInfoScript->huds[popbar], SBarInfoScript->popups[currentPopup-1].getXOffset(), SBarInfoScript->popups[currentPopup-1].getYOffset(),
+			SBarInfoScript->popups[currentPopup-1].getAlpha(SBarInfoScript->huds[popbar].alpha));
 	}
 }
 
@@ -321,12 +321,12 @@ void DSBarInfo::Tick ()
 	MugShot.Tick(CPlayer);
 	if(currentPopup != POP_None)
 	{
-		SBarInfoScript->popups[currentPopup].tick();
-		if(SBarInfoScript->popups[currentPopup].opened == false && SBarInfoScript->popups[currentPopup].isDoneMoving())
+		SBarInfoScript->popups[currentPopup-1].tick();
+		if(SBarInfoScript->popups[currentPopup-1].opened == false && SBarInfoScript->popups[currentPopup-1].isDoneMoving())
 		{
 			currentPopup = pendingPopup;
 			if(currentPopup != POP_None)
-				SBarInfoScript->popups[currentPopup].open();
+				SBarInfoScript->popups[currentPopup-1].open();
 		}
 	}
 }
@@ -351,13 +351,13 @@ void DSBarInfo::ShowPop(int popnum)
 	else
 		pendingPopup = POP_None;
 	if(currentPopup != POP_None)
-		SBarInfoScript->popups[currentPopup].close();
+		SBarInfoScript->popups[currentPopup-1].close();
 	else
 	{
 		currentPopup = pendingPopup;
 		pendingPopup = POP_None;
 		if(currentPopup != POP_None)
-			SBarInfoScript->popups[currentPopup].open();
+			SBarInfoScript->popups[currentPopup-1].open();
 	}
 }