diff --git a/src/eval.c b/src/eval.c
index bc4db2906c..1e2e4c4768 100644
--- a/src/eval.c
+++ b/src/eval.c
@@ -5006,7 +5006,15 @@ echo_string_core(
 		ga_concat(&ga, (char_u *)"function(");
 		if (fname != NULL)
 		{
-		    ga_concat(&ga, fname);
+		    // When using uf_name prepend "g:" for a global function.
+		    if (pt->pt_name == NULL && fname[0] == '\''
+						      && vim_isupper(fname[1]))
+		    {
+			ga_concat(&ga, (char_u *)"'g:");
+			ga_concat(&ga, fname + 1);
+		    }
+		    else
+			ga_concat(&ga, fname);
 		    vim_free(fname);
 		}
 		if (pt != NULL && pt->pt_argc > 0)
diff --git a/src/testdir/test_functions.vim b/src/testdir/test_functions.vim
index ac9bb4cfab..a215667964 100644
--- a/src/testdir/test_functions.vim
+++ b/src/testdir/test_functions.vim
@@ -2771,5 +2771,10 @@ func Test_builtin_check()
   call assert_fails('call extend(g:, #{bar: { -> "foo" }}, "force")', 'E704:')
 endfunc
 
+func Test_funcref_to_string()
+  let Fn = funcref('g:Test_funcref_to_string')
+  call assert_equal("function('g:Test_funcref_to_string')", string(Fn))
+endfunc
+
 
 " vim: shiftwidth=2 sts=2 expandtab
diff --git a/src/version.c b/src/version.c
index 083c111f0e..0199acade2 100644
--- a/src/version.c
+++ b/src/version.c
@@ -753,6 +753,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    3766,
 /**/
     3765,
 /**/