diff --git a/IDEHelper/Compiler/BfDefBuilder.cpp b/IDEHelper/Compiler/BfDefBuilder.cpp
index 5fe5d948..d74230b2 100644
--- a/IDEHelper/Compiler/BfDefBuilder.cpp
+++ b/IDEHelper/Compiler/BfDefBuilder.cpp
@@ -667,7 +667,7 @@ BfMethodDef* BfDefBuilder::CreateMethodDef(BfMethodDeclaration* methodDeclaratio
 
 			if (paramDef->mParamDeclaration->mInitializer != NULL)
 				hasDefault = true;
-			else if (hasDefault)
+			else if ((hasDefault) && (paramDef->mParamKind != BfParamKind_Params))
 			{
 				if (!didDefaultsError)
 					Fail("Optional parameters must appear after all required parameters", methodDef->mParams[paramIdx - 1]->mParamDeclaration);
diff --git a/IDEHelper/Compiler/BfExprEvaluator.cpp b/IDEHelper/Compiler/BfExprEvaluator.cpp
index c73dbaca..75c8ac93 100644
--- a/IDEHelper/Compiler/BfExprEvaluator.cpp
+++ b/IDEHelper/Compiler/BfExprEvaluator.cpp
@@ -5830,7 +5830,7 @@ BfTypedValue BfExprEvaluator::CreateCall(BfAstNode* targetSrc, const BfTypedValu
 
 				if (!isDirectPass)
 				{
-					int numElements = (int)argValues.size() - argIdx;
+					int numElements = BF_MAX((int)argValues.size() - argIdx, 0);
 					if (methodDef->mMethodType == BfMethodType_Extension)
 						numElements++;