diff --git a/gdb-port/README.md b/gdb-port/README.md
index 7e5528d0b53a7ac1046d60a237de641594c4dab4..bdb5589912d8e28d4205dfbffd46ce0e5eb593cb 100644
--- a/gdb-port/README.md
+++ b/gdb-port/README.md
@@ -99,7 +99,7 @@ hammer-parser-preview-input
 Interprets the next 32 bytes of input as UTF-8, and prints the resulting string.
 
 ```
-hammer-parser-top-per-arena-mem
+hammer-parser-top-single-arena-mem
 ```
 
 Finds the parser with highest number of allocated bytes in a single arena.
diff --git a/gdb-port/parser-name-instrumentation-gdb.py b/gdb-port/parser-name-instrumentation-gdb.py
index 139cce341c9882e4238004a06656d216697ac0e3..fbb5b8392b237f27e168f595ff8cb5edf3846197 100644
--- a/gdb-port/parser-name-instrumentation-gdb.py
+++ b/gdb-port/parser-name-instrumentation-gdb.py
@@ -476,9 +476,9 @@ class HammerParserMemUseName(gdb.Command):
 
 HammerParserMemUseName()
 
-class HammerParserTopPerArenaMem(gdb.Command):
+class HammerParserTopSingleArenaMem(gdb.Command):
 	def __init__(self):
-		super(HammerParserTopPerArenaMem, self).__init__("hammer-parser-top-per-arena-mem", gdb.COMMAND_OBSCURE)
+		super(HammerParserTopSingleArenaMem, self).__init__("hammer-parser-top-single-arena-mem", gdb.COMMAND_OBSCURE)
 
 	def invoke(self, arg, from_tty):
 		args = gdb.string_to_argv(arg)
@@ -486,7 +486,7 @@ class HammerParserTopPerArenaMem(gdb.Command):
 		p = top_level_parse.get_parser_top_per_arena_mem()
 		print((p.name, hex(p.address), p.bytes_used))
 
-HammerParserTopPerArenaMem()
+HammerParserTopSingleArenaMem()
 
 class HammerParserTopTotalArenaMem(gdb.Command):
 	def __init__(self):