diff --git a/tools/disasm/disasm.py b/tools/disasm/disasm.py
index 5b3f0ba34e..05693820c5 100755
--- a/tools/disasm/disasm.py
+++ b/tools/disasm/disasm.py
@@ -71,7 +71,7 @@ def main():
     context = spimdisasm.common.Context()
     context.parseArgs(args)
     context.changeGlobalSegmentRanges(0x00000000, 0x01000000, 0x8000000, 0x81000000)
-    context.addBannedSymbolRange(0x10000000, 0x80000400)
+    context.addBannedSymbolRange(0x10000000, 0x80000300)
     context.addBannedSymbolRange(0xC0000000, 0xFFFFFFFF)
 
     spimdisasm.mips.InstructionConfig.parseArgs(args)