diff --git a/include/swift/SIL/Dominance.h b/include/swift/SIL/Dominance.h
index 03a1b307e1136..a98cee032c69f 100644
--- a/include/swift/SIL/Dominance.h
+++ b/include/swift/SIL/Dominance.h
@@ -41,7 +41,7 @@ class DominanceInfo : public llvm::DominatorTreeBase<SILBasicBlock> {
 
   /// Return true if the other dominator tree does not match this dominator
   /// tree.
-  inline bool errorOccuredOnComparison(const DominanceInfo &Other) const {
+  inline bool errorOccurredOnComparison(const DominanceInfo &Other) const {
     const auto *R = getRootNode();
     const auto *OtherR = Other.getRootNode();
 
@@ -131,7 +131,7 @@ class PostDominanceInfo : public llvm::DominatorTreeBase<SILBasicBlock> {
 
   /// Return true if the other dominator tree does not match this dominator
   /// tree.
-  inline bool errorOccuredOnComparison(const PostDominanceInfo &Other) const {
+  inline bool errorOccurredOnComparison(const PostDominanceInfo &Other) const {
     const auto *R = getRootNode();
     const auto *OtherR = Other.getRootNode();
 
diff --git a/lib/SIL/Dominance.cpp b/lib/SIL/Dominance.cpp
index 907b928f0dc6d..7fe21ac8750e8 100644
--- a/lib/SIL/Dominance.cpp
+++ b/lib/SIL/Dominance.cpp
@@ -55,7 +55,7 @@ void DominanceInfo::verify() const {
   DominanceInfo OtherDT(F);
 
   // And compare.
-  if (errorOccuredOnComparison(OtherDT)) {
+  if (errorOccurredOnComparison(OtherDT)) {
     llvm::errs() << "DominatorTree is not up to date!\nComputed:\n";
     print(llvm::errs());
     llvm::errs() << "\nActual:\n";
@@ -102,7 +102,7 @@ void PostDominanceInfo::verify() const {
   PostDominanceInfo OtherDT(F);
 
   // And compare.
-  if (errorOccuredOnComparison(OtherDT)) {
+  if (errorOccurredOnComparison(OtherDT)) {
     llvm::errs() << "PostDominatorTree is not up to date!\nComputed:\n";
     print(llvm::errs());
     llvm::errs() << "\nActual:\n";