diff --git a/libs/binder/IpPrefix.cpp b/libs/binder/IpPrefix.cpp
index 8d62266..4edc493 100644
--- a/libs/binder/IpPrefix.cpp
+++ b/libs/binder/IpPrefix.cpp
@@ -24,12 +24,10 @@
 #include <log/log.h>
 #include <utils/Errors.h>
 
-using android::BAD_TYPE;
 using android::BAD_VALUE;
 using android::NO_ERROR;
 using android::Parcel;
 using android::status_t;
-using android::UNEXPECTED_NULL;
 
 namespace android {
 
diff --git a/libs/binder/Parcel.cpp b/libs/binder/Parcel.cpp
index 8087443..8dab98e 100644
--- a/libs/binder/Parcel.cpp
+++ b/libs/binder/Parcel.cpp
@@ -2285,7 +2285,7 @@
         ssize_t written = TEMP_FAILURE_RETRY(
             ::write(comm, &message, sizeof(message)));
 
-        if (written == -1 || written != sizeof(message)) {
+        if (written != sizeof(message)) {
             ALOGW("Failed to detach ParcelFileDescriptor written: %zd err: %s",
                 written, strerror(errno));
             return BAD_TYPE;
diff --git a/libs/binder/PersistableBundle.cpp b/libs/binder/PersistableBundle.cpp
index c807cfe..406fee0 100644
--- a/libs/binder/PersistableBundle.cpp
+++ b/libs/binder/PersistableBundle.cpp
@@ -31,7 +31,6 @@
 using android::BAD_VALUE;
 using android::NO_ERROR;
 using android::Parcel;
-using android::sp;
 using android::status_t;
 using android::UNEXPECTED_NULL;