diff --git a/hyracks-dataflow-common/src/main/java/edu/uci/ics/hyracks/dataflow/common/data/parsers/IntegerParserFactory.java b/hyracks-dataflow-common/src/main/java/edu/uci/ics/hyracks/dataflow/common/data/parsers/IntegerParserFactory.java
index 3a71afa..f9aa519 100644
--- a/hyracks-dataflow-common/src/main/java/edu/uci/ics/hyracks/dataflow/common/data/parsers/IntegerParserFactory.java
+++ b/hyracks-dataflow-common/src/main/java/edu/uci/ics/hyracks/dataflow/common/data/parsers/IntegerParserFactory.java
@@ -48,6 +48,8 @@
 
                         case '-':
                             sign = -1;
+                            pre = false;
+                            break;
 
                         case '0':
                         case '1':
@@ -60,6 +62,7 @@
                         case '8':
                         case '9':
                             pre = false;
+                            n = n * 10 + (ch - '0');
                             break;
 
                         default: