diff --git a/CoreHelpers.tl b/CoreHelpers.tl
index e76050c..d92a69a 100644
--- a/CoreHelpers.tl
+++ b/CoreHelpers.tl
@@ -38,9 +38,9 @@ function CoreHelpers.isWhitespace(chr: string): boolean
 					chr == "\f")
 end
 function CoreHelpers.skipWhitespace(state: Environment)
-	local chr = state.activeInputStream:peek()
+	local chr = state.activeInputStream:curr()
 	while (CoreHelpers.isWhitespace(chr)) do
-		chr = state.activeInputStream:advance()
+		chr = state.activeInputStream:next()
 	end
 end