diff --git a/checks/regex/regex10.py b/checks/regex/regex10.py
index 1931875..1c3ae01 100644
--- a/checks/regex/regex10.py
+++ b/checks/regex/regex10.py
@@ -5,13 +5,27 @@
 
 m2 = re.search(pattern, "[WARNING] app.server: disk usage at 90%")
 assert m2 is not None, "pattern should match a WARNING line"
-assert m2.group("level") == "WARNING"
-assert m2.group("logger") == "app.server"
-assert m2.group("message") == "disk usage at 90%"
+assert m2.group("level") == "WARNING", (
+    f"m2.group('level') should be 'WARNING', got {m2.group('level')!r}"
+)
+assert m2.group("logger") == "app.server", (
+    f"m2.group('logger') should be 'app.server', got {m2.group('logger')!r}"
+)
+assert m2.group("message") == "disk usage at 90%", (
+    f"m2.group('message') should be 'disk usage at 90%', "
+    f"got {m2.group('message')!r}"
+)
 
 m3 = re.search(pattern, "[INFO] scheduler: job completed in 0.5s")
 assert m3 is not None, "pattern should match an INFO line"
-assert m3.group("level") == "INFO"
-assert m3.group("logger") == "scheduler"
-assert m3.group("message") == "job completed in 0.5s"
+assert m3.group("level") == "INFO", (
+    f"m3.group('level') should be 'INFO', got {m3.group('level')!r}"
+)
+assert m3.group("logger") == "scheduler", (
+    f"m3.group('logger') should be 'scheduler', got {m3.group('logger')!r}"
+)
+assert m3.group("message") == "job completed in 0.5s", (
+    f"m3.group('message') should be 'job completed in 0.5s', "
+    f"got {m3.group('message')!r}"
+)
 print("regex10 ✓")
diff --git a/checks/regex/regex9.py b/checks/regex/regex9.py
index 2fd54dc..7903818 100644
--- a/checks/regex/regex9.py
+++ b/checks/regex/regex9.py
@@ -3,6 +3,13 @@
 assert month == "07", f"month should be '07', got {month!r}"
 assert day == "15", f"day should be '15', got {day!r}"
 m2 = re.search(pattern, "1999-12-31")
-assert m2 is not None
-assert m2.group("year") == "1999" and m2.group("month") == "12" and m2.group("day") == "31"
+assert m2 is not None, "pattern should match '1999-12-31'"
+assert (
+    m2.group("year") == "1999"
+    and m2.group("month") == "12"
+    and m2.group("day") == "31"
+), (
+    f"date parts should be ('1999', '12', '31'), got "
+    f"({m2.group('year')!r}, {m2.group('month')!r}, {m2.group('day')!r})"
+)
 print("regex9 ✓")