diff --git a/minzip/Zip.c b/minzip/Zip.c
index bdb565c..38f939f 100644
--- a/minzip/Zip.c
+++ b/minzip/Zip.c
@@ -509,9 +509,6 @@
     unsigned char procBuf[32 * 1024];
     z_stream zstream;
     int zerr;
-    long compRemaining;
-
-    compRemaining = pEntry->compLen;
 
     /*
      * Initialize the zlib stream.
@@ -759,7 +756,7 @@
      */
     needLen = helper->targetDirLen + 1 +
             pEntry->fileNameLen - helper->zipDirLen + 1;
-    if (needLen > helper->bufLen) {
+    if (firstTime || needLen > helper->bufLen) {
         char *newBuf;
 
         needLen *= 2;