--- a/src/vdpau_wrapper.c
+++ b/src/vdpau_wrapper.c
@@ -301,31 +313,20 @@
 {
     FILE *fp;
     char buffer[1024];
-    int ret, i;
 
-    fp = fopen("/proc/self/cmdline", "r");
+    fp = fopen("/proc/self/maps", "r");
     if (!fp) {
         return;
     }
-    ret = fread(buffer, 1, sizeof(buffer) - 1, fp);
-    fclose(fp);
-    if (ret < 0) {
-        return;
-    }
-    /*
-     * Sometimes the file contains null between arguments. Wipe these out so
-     * strstr doesn't stop early.
-     */
-    for (i = 0; i < ret; i++) {
-        if (buffer[i] == '\0') {
-            buffer[i] = 'x';
-        }
-    }
-    buffer[ret] = '\0';
 
-    if (strstr(buffer, "libflashplayer") != NULL) {
-        _running_under_flash = 1;
+    while( fgets(buffer, sizeof(buffer), fp)) {
+        if (strstr(buffer, "libflashplayer") != NULL)
+            _running_under_flash = 1;
+            break;
     }
+
+    fclose(fp);
+
 }
 
 void init_config(void)