diff --git a/src/lib_string.c b/src/lib_string.c
index 204f6975..0529cff3 100644
--- a/src/lib_string.c
+++ b/src/lib_string.c
@@ -714,8 +714,7 @@ again:
 	lj_strfmt_putfchar(sb, sf, lj_lib_checkint(L, arg));
 	break;
       case STRFMT_PTR:  /* No formatting. */
-	setsbufP(sb, lj_strfmt_wptr(lj_buf_more(sb, STRFMT_MAXBUF_PTR),
-				    lj_obj_ptr(L->base+arg-1)));
+	lj_strfmt_putptr(sb, lj_obj_ptr(L->base+arg-1));
 	break;
       default:
 	lua_assert(0);
diff --git a/src/lj_strfmt.c b/src/lj_strfmt.c
index 0003de70..614bd4ef 100644
--- a/src/lj_strfmt.c
+++ b/src/lj_strfmt.c
@@ -203,6 +203,12 @@ SBuf * LJ_FASTCALL lj_strfmt_putnum(SBuf *sb, cTValue *o)
 }
 #endif
 
+SBuf * LJ_FASTCALL lj_strfmt_putptr(SBuf *sb, const void *v)
+{
+  setsbufP(sb, lj_strfmt_wptr(lj_buf_more(sb, STRFMT_MAXBUF_PTR), v));
+  return sb;
+}
+
 /* Add quoted string to buffer. */
 SBuf * LJ_FASTCALL lj_strfmt_putquoted(SBuf *sb, GCstr *str)
 {
@@ -520,8 +526,7 @@ const char *lj_strfmt_pushvf(lua_State *L, const char *fmt, va_list argp)
       lj_buf_putb(sb, va_arg(argp, int));
       break;
     case STRFMT_PTR:
-      setsbufP(sb, lj_strfmt_wptr(lj_buf_more(sb, STRFMT_MAXBUF_PTR),
-				  va_arg(argp, void *)));
+      lj_strfmt_putptr(sb, va_arg(argp, void *));
       break;
     case STRFMT_ERR:
     default:
diff --git a/src/lj_strfmt.h b/src/lj_strfmt.h
index 5454336f..4bbdd4a7 100644
--- a/src/lj_strfmt.h
+++ b/src/lj_strfmt.h
@@ -93,6 +93,7 @@ LJ_FUNC SBuf * LJ_FASTCALL lj_strfmt_putint(SBuf *sb, int32_t k);
 #if LJ_HASJIT
 LJ_FUNC SBuf * LJ_FASTCALL lj_strfmt_putnum(SBuf *sb, cTValue *o);
 #endif
+LJ_FUNC SBuf * LJ_FASTCALL lj_strfmt_putptr(SBuf *sb, const void *v);
 LJ_FUNC SBuf * LJ_FASTCALL lj_strfmt_putquoted(SBuf *sb, GCstr *str);
 
 /* Formatted conversions to buffer. */