diff --git a/minzip/Zip.c b/minzip/Zip.c
index 38f939f..0f89835 100644
--- a/minzip/Zip.c
+++ b/minzip/Zip.c
@@ -91,7 +91,7 @@
 static void dumpEntry(const ZipEntry* pEntry)
 {
     LOGI(" %p '%.*s'\n", pEntry->fileName,pEntry->fileNameLen,pEntry->fileName);
-    LOGI("   off=%ld comp=%ld uncomp=%ld how=%d\n", pEntry->offset,
+    LOGI("   off=%u comp=%u uncomp=%u how=%d\n", pEntry->offset,
         pEntry->compLen, pEntry->uncompLen, pEntry->compression);
 }
 #endif
@@ -505,7 +505,8 @@
     const ZipEntry *pEntry, ProcessZipEntryContentsFunction processFunction,
     void *cookie)
 {
-    long result = -1;
+    bool success = false;
+    unsigned long totalOut = 0;
     unsigned char procBuf[32 * 1024];
     z_stream zstream;
     int zerr;
@@ -569,16 +570,17 @@
     assert(zerr == Z_STREAM_END);       /* other errors should've been caught */
 
     // success!
-    result = zstream.total_out;
+    totalOut = zstream.total_out;
+    success = true;
 
 z_bail:
     inflateEnd(&zstream);        /* free up any allocated structures */
 
 bail:
-    if (result != pEntry->uncompLen) {
-        if (result != -1)        // error already shown?
-            LOGW("Size mismatch on inflated file (%ld vs %ld)\n",
-                result, pEntry->uncompLen);
+    if (totalOut != pEntry->uncompLen) {
+        if (success) {       // error already shown?
+            LOGW("Size mismatch on inflated file (%lu vs %u)\n", totalOut, pEntry->uncompLen);
+        }
         return false;
     }
     return true;
diff --git a/minzip/Zip.h b/minzip/Zip.h
index 86d8db5..e6b19e1 100644
--- a/minzip/Zip.h
+++ b/minzip/Zip.h
@@ -32,9 +32,9 @@
 typedef struct ZipEntry {
     unsigned int fileNameLen;
     const char*  fileName;       // not null-terminated
-    long         offset;
-    long         compLen;
-    long         uncompLen;
+    uint32_t     offset;
+    uint32_t     compLen;
+    uint32_t     uncompLen;
     int          compression;
     long         modTime;
     long         crc32;
@@ -85,10 +85,10 @@
 const ZipEntry* mzFindZipEntry(const ZipArchive* pArchive,
         const char* entryName);
 
-INLINE long mzGetZipEntryOffset(const ZipEntry* pEntry) {
+INLINE uint32_t mzGetZipEntryOffset(const ZipEntry* pEntry) {
     return pEntry->offset;
 }
-INLINE long mzGetZipEntryUncompLen(const ZipEntry* pEntry) {
+INLINE uint32_t mzGetZipEntryUncompLen(const ZipEntry* pEntry) {
     return pEntry->uncompLen;
 }