diff --git a/oscar64/InterCode.cpp b/oscar64/InterCode.cpp
index fe5ec6b..b50ee3d 100644
--- a/oscar64/InterCode.cpp
+++ b/oscar64/InterCode.cpp
@@ -6246,7 +6246,13 @@ bool InterCodeBasicBlock::PropagateConstOperationsUp(void)
 							}
 
 							eb->mInstructions.Insert(di, nins);
+							if (ins->mDst.mTemp >= 0)
+								eb->mExitRequiredTemps += ins->mDst.mTemp;
 						}
+
+						if (ins->mDst.mTemp >= 0)
+							mEntryRequiredTemps += ins->mDst.mTemp;
+
 						mInstructions.Remove(i);
 						changed = true;
 					}
@@ -12409,6 +12415,8 @@ void InterCodeProcedure::PropagateConstOperationsUp(void)
 	ResetVisited();
 	mEntryBlock->CollectEntryBlocks(nullptr);
 
+	BuildDataFlowSets();
+
 	bool	changed;
 	do {
 		changed = false;