diff --git a/arch/x86/mm/init_32.c b/arch/x86/mm/init_32.c
index 00c1d8508258..0a3707fb973b 100644
--- a/arch/x86/mm/init_32.c
+++ b/arch/x86/mm/init_32.c
@@ -1060,7 +1060,7 @@ unsigned long __init_refok init_memory_mapping(unsigned long start,
 
 	__flush_tlb_all();
 
-	if (!after_bootmem)
+	if (!after_bootmem && table_end > table_start)
 		reserve_early(table_start << PAGE_SHIFT,
 				 table_end << PAGE_SHIFT, "PGTABLE");