diff --git a/api/graphics_lib.C b/api/graphics_lib.C
index 5d77d80eae..d02b7cb857 100644
--- a/api/graphics_lib.C
+++ b/api/graphics_lib.C
@@ -70,9 +70,15 @@ int boinc_init_options_graphics_lib(
     boinc_main_state.set_worker_timer_hook = set_worker_timer;
     boinc_main_state.app_client_shmp = &app_client_shm;
 
-    ptr = argv0;
+    // figure out name of executable, and append .so
+    //
+    if ((ptr = strrchr(argv0, '/'))) {
+        ptr++;
+    } else {
+        ptr = argv0;
+    }
     strcpy(graphics_lib, ptr);
-    strncat(graphics_lib, DLLEXT, BOINC_STRLEN);
+    strncat(graphics_lib, ".so", BOINC_STRLEN);
     graphics_lib[BOINC_STRLEN-1] = 0;
   
     // boinc-resolve library name: it could be a XML symlink
@@ -82,7 +88,6 @@ int boinc_init_options_graphics_lib(
             "Unable to boinc_resolve name of shared object file %s\n",
             graphics_lib
         );
-        fflush(stderr);
         goto no_graphics;
     }
   
@@ -97,7 +102,6 @@ int boinc_init_options_graphics_lib(
         fprintf(stderr,
             "dlopen() failed: %s\nNo graphics.\n", errormsg?errormsg:""
         );
-        fflush(stderr);
         goto no_graphics;
     }