diff --git a/src/ex_cmds.c b/src/ex_cmds.c
index a17b40c..01e820d 100644
--- a/src/ex_cmds.c
+++ b/src/ex_cmds.c
@@ -6997,6 +6997,16 @@
 		lnum = atoi((char *)arg);
 		arg = skiptowhite(arg);
 	    }
+	    else if (STRNCMP(arg, "*", 1) == 0 && idx == SIGNCMD_UNPLACE)
+	    {
+		if (id != -1)
+		{
+		    EMSG(_(e_invarg));
+		    return;
+		}
+		id = -2;
+		arg = skiptowhite(arg + 1);
+	    }
 	    else if (STRNCMP(arg, "name=", 5) == 0)
 	    {
 		arg += 5;
@@ -7033,7 +7043,7 @@
 	{
 	    EMSG2(_("E158: Invalid buffer name: %s"), arg);
 	}
-	else if (id <= 0)
+	else if (id <= 0 && !(idx == SIGNCMD_UNPLACE && id == -2))
 	{
 	    if (lnum >= 0 || sign_name != NULL)
 		EMSG(_(e_invarg));
@@ -7074,11 +7084,17 @@
 	}
 	else if (idx == SIGNCMD_UNPLACE)
 	{
-	    /* ":sign unplace {id} file={fname}" */
 	    if (lnum >= 0 || sign_name != NULL)
 		EMSG(_(e_invarg));
+	    else if (id == -2)
+	    {
+		/* ":sign unplace * file={fname}" */
+		redraw_buf_later(buf, NOT_VALID);
+		buf_delete_signs(buf);
+	    }
 	    else
 	    {
+		/* ":sign unplace {id} file={fname}" */
 		lnum = buf_delsign(buf, id);
 		update_debug_sign(buf, lnum);
 	    }