diff --git a/adb/framebuffer_service.c b/adb/framebuffer_service.c
index 20c08d2..fa7fd98 100644
--- a/adb/framebuffer_service.c
+++ b/adb/framebuffer_service.c
@@ -55,13 +55,13 @@
 void framebuffer_service(int fd, void *cookie)
 {
     struct fbinfo fbinfo;
-    unsigned int i;
+    unsigned int i, bsize;
     char buf[640];
     int fd_screencap;
     int w, h, f;
     int fds[2];
 
-    if (pipe(fds) < 0) goto done;
+    if (pipe(fds) < 0) goto pipefail;
 
     pid_t pid = fork();
     if (pid < 0) goto done;
@@ -164,17 +164,19 @@
     if(writex(fd, &fbinfo, sizeof(fbinfo))) goto done;
 
     /* write data */
-    for(i = 0; i < fbinfo.size; i += sizeof(buf)) {
-      if(readx(fd_screencap, buf, sizeof(buf))) goto done;
-      if(writex(fd, buf, sizeof(buf))) goto done;
+    for(i = 0; i < fbinfo.size; i += bsize) {
+      bsize = sizeof(buf);
+      if (i + bsize > fbinfo.size)
+        bsize = fbinfo.size - i;
+      if(readx(fd_screencap, buf, bsize)) goto done;
+      if(writex(fd, buf, bsize)) goto done;
     }
-    if(readx(fd_screencap, buf, fbinfo.size % sizeof(buf))) goto done;
-    if(writex(fd, buf, fbinfo.size % sizeof(buf))) goto done;
 
 done:
     TEMP_FAILURE_RETRY(waitpid(pid, NULL, 0));
 
     close(fds[0]);
     close(fds[1]);
+pipefail:
     close(fd);
 }