diff --git a/src_main/core/pistring.cpp b/src_main/core/pistring.cpp
index a0017dd6..02338221 100755
--- a/src_main/core/pistring.cpp
+++ b/src_main/core/pistring.cpp
@@ -419,8 +419,7 @@ const char * PIString::dataAscii() const {
 
 
 uint PIString::hash() const {
-	buildData();
-	return piHashData(data_.data(), data_.size_s() - 1);
+	return piHashData((const uchar*)PIDeque<PIChar>::data(), size());
 }