diff --git a/tools/isledecomp/tests/test_parser.py b/tools/isledecomp/tests/test_parser.py
index 7731918f..69764f74 100644
--- a/tools/isledecomp/tests/test_parser.py
+++ b/tools/isledecomp/tests/test_parser.py
@@ -26,7 +26,7 @@ def test_missing_sig(parser):
 def test_not_exact_syntax(parser):
     """Alert to inexact syntax right here in the parser instead of kicking it downstream.
     Doing this means we don't have to save the actual text."""
-    parser.read_line("// function: test 1234")
+    parser.read_line("// function: test 0x1234")
     assert len(parser.alerts) == 1
     assert parser.alerts[0].code == ParserError.BAD_DECOMP_MARKER
 
diff --git a/tools/isledecomp/tests/test_parser_util.py b/tools/isledecomp/tests/test_parser_util.py
index bbbf2d3a..a8882721 100644
--- a/tools/isledecomp/tests/test_parser_util.py
+++ b/tools/isledecomp/tests/test_parser_util.py
@@ -41,8 +41,8 @@ marker_samples = [
     (True, False, "//  FUNCTION: ISLE 0xdeadbeef"),
     (True, False, "// FUNCTION:  ISLE 0xdeadbeef"),
     (True, False, "// FUNCTION: ISLE  0xdeadbeef"),
-    # Must have 0x prefix for hex number
-    (True, False, "// FUNCTION: ISLE deadbeef"),
+    # Must have 0x prefix for hex number to match at all
+    (False, False, "// FUNCTION: ISLE deadbeef"),
     # Offset, module name, and STUB must be uppercase
     (True, False, "// function: ISLE 0xdeadbeef"),
     (True, False, "// function: isle 0xdeadbeef"),