diff --git a/llvm/include/llvm-c/Orc.h b/llvm/include/llvm-c/Orc.h
--- a/llvm/include/llvm-c/Orc.h
+++ b/llvm/include/llvm-c/Orc.h
@@ -339,8 +339,7 @@
  * ownership has not been passed to a JITDylib (e.g. because some error
  * prevented the client from calling LLVMOrcJITDylibAddGenerator).
  */
-void LLVMOrcDisposeDefinitionGenerator(
-    LLVMOrcDefinitionGeneratorRef DG);
+void LLVMOrcDisposeDefinitionGenerator(LLVMOrcDefinitionGeneratorRef DG);
 
 /**
  * Dispose of a MaterializationUnit.
@@ -388,7 +387,9 @@
  * Returns the JITDylib with the given name, or NULL if no such JITDylib
  * exists.
  */
-LLVMOrcJITDylibRef LLVMOrcExecutionSessionGetJITDylibByName(const char *Name);
+LLVMOrcJITDylibRef
+LLVMOrcExecutionSessionGetJITDylibByName(LLVMOrcExecutionSessionRef ES,
+                                         const char *Name);
 
 /**
  * Return a reference to a newly created resource tracker associated with JD.
diff --git a/llvm/lib/ExecutionEngine/Orc/OrcV2CBindings.cpp b/llvm/lib/ExecutionEngine/Orc/OrcV2CBindings.cpp
--- a/llvm/lib/ExecutionEngine/Orc/OrcV2CBindings.cpp
+++ b/llvm/lib/ExecutionEngine/Orc/OrcV2CBindings.cpp
@@ -393,7 +393,7 @@
   delete unwrap(JTMB);
 }
 
-void lLVMOrcDisposeObjectLayer(LLVMOrcObjectLayerRef ObjLayer) {
+void LLVMOrcDisposeObjectLayer(LLVMOrcObjectLayerRef ObjLayer) {
   delete unwrap(ObjLayer);
 }