diff --git a/lib/ExecutionEngine/Interpreter/Execution.cpp b/lib/ExecutionEngine/Interpreter/Execution.cpp
index b351ba2..8d21d1f 100644
--- a/lib/ExecutionEngine/Interpreter/Execution.cpp
+++ b/lib/ExecutionEngine/Interpreter/Execution.cpp
@@ -644,7 +644,7 @@
 }
 
 void Interpreter::visitUnreachableInst(UnreachableInst &I) {
-  llvm_report_error("ERROR: Program executed an 'unreachable' instruction!");
+  llvm_report_error("Program executed an 'unreachable' instruction!");
 }
 
 void Interpreter::visitBranchInst(BranchInst &I) {
diff --git a/lib/ExecutionEngine/JIT/Intercept.cpp b/lib/ExecutionEngine/JIT/Intercept.cpp
index feb13c6..0dde845 100644
--- a/lib/ExecutionEngine/JIT/Intercept.cpp
+++ b/lib/ExecutionEngine/JIT/Intercept.cpp
@@ -141,7 +141,7 @@
       return RP;
 
   if (AbortOnFailure) {
-    llvm_report_error("ERROR: Program used external function '"+Name+
+    llvm_report_error("Program used external function '"+Name+
                       "' which could not be resolved!");
   }
   return 0;