diff --git a/libs/binder/IPCThreadState.cpp b/libs/binder/IPCThreadState.cpp
index d29f671..8633691 100644
--- a/libs/binder/IPCThreadState.cpp
+++ b/libs/binder/IPCThreadState.cpp
@@ -147,9 +147,9 @@
 {
     static const size_t N = sizeof(kReturnStrings)/sizeof(kReturnStrings[0]);
     const int32_t* cmd = (const int32_t*)_cmd;
-    int32_t code = *cmd++;
+    uint32_t code = (uint32_t)*cmd++;
     size_t cmdIndex = code & 0xff;
-    if (code == (int32_t) BR_ERROR) {
+    if (code == BR_ERROR) {
         out << "BR_ERROR: " << (void*)(long)(*cmd++) << endl;
         return cmd;
     } else if (cmdIndex >= N) {
@@ -208,7 +208,7 @@
 {
     static const size_t N = sizeof(kCommandStrings)/sizeof(kCommandStrings[0]);
     const int32_t* cmd = (const int32_t*)_cmd;
-    int32_t code = *cmd++;
+    uint32_t code = (uint32_t)*cmd++;
     size_t cmdIndex = code & 0xff;
 
     if (cmdIndex >= N) {
@@ -697,7 +697,7 @@
 
 status_t IPCThreadState::waitForResponse(Parcel *reply, status_t *acquireResult)
 {
-    int32_t cmd;
+    uint32_t cmd;
     int32_t err;
 
     while (1) {
@@ -706,7 +706,7 @@
         if (err < NO_ERROR) break;
         if (mIn.dataAvail() == 0) continue;
         
-        cmd = mIn.readInt32();
+        cmd = (uint32_t)mIn.readInt32();
         
         IF_LOG_COMMANDS() {
             alog << "Processing waitForResponse Command: "
@@ -936,7 +936,7 @@
     RefBase::weakref_type* refs;
     status_t result = NO_ERROR;
     
-    switch (cmd) {
+    switch ((uint32_t)cmd) {
     case BR_ERROR:
         result = mIn.readInt32();
         break;