diff --git a/src/emu/cpu/m68000/m68kdasm.c b/src/emu/cpu/m68000/m68kdasm.c
index fbb61dbfe37..662f0988957 100644
--- a/src/emu/cpu/m68000/m68kdasm.c
+++ b/src/emu/cpu/m68000/m68kdasm.c
@@ -480,7 +480,14 @@ static char* get_ea_mode_str(UINT32 instruction, UINT32 size)
 					strcat(mode, "[");
 				if(base)
 				{
-					strcat(mode, make_signed_hex_str_16(base));
+					if (EXT_BASE_DISPLACEMENT_LONG(extension))
+					{
+						strcat(mode, make_signed_hex_str_32(base));
+					}
+					else
+					{
+						strcat(mode, make_signed_hex_str_16(base));
+					}
 					comma = 1;
 				}
 				if(*base_reg)