diff --git a/cmd/geth/logtestcmd_active.go b/cmd/geth/logtestcmd_active.go
index 0ca4cc621d..21313c24b5 100644
--- a/cmd/geth/logtestcmd_active.go
+++ b/cmd/geth/logtestcmd_active.go
@@ -43,6 +43,7 @@ This command is only meant for testing.
 
 type customQuotedStringer struct {
 }
+
 func (c customQuotedStringer) String() string {
 	return "output with 'quotes'"
 }
@@ -80,8 +81,6 @@ func logTest(ctx *cli.Context) error {
 		log.Info("uint64", "18,446,744,073,709,551,615", uint64(math.MaxUint64))
 	}
 	{ // Special characters
-
-
 		log.Info("Special chars in value", "key", "special \r\n\t chars")
 		log.Info("Special chars in key", "special \n\t chars", "value")
 
@@ -166,6 +165,10 @@ func logTest(ctx *cli.Context) error {
 	{ // Logging with 'reserved' keys
 		log.Info("Using keys 't', 'lvl', 'time', 'level' and 'msg'", "t", "t", "time", "time", "lvl", "lvl", "level", "level", "msg", "msg")
 	}
+	{ // Logging with wrong attr-value pairs
+		log.Info("Odd pair (1 attr)", "key")
+		log.Info("Odd pair (3 attr)", "key", "value", "key2")
+	}
 	return nil
 }
 
diff --git a/cmd/geth/testdata/logging/logtest-json.txt b/cmd/geth/testdata/logging/logtest-json.txt
index bdc1ae4de6..2943528833 100644
--- a/cmd/geth/testdata/logging/logtest-json.txt
+++ b/cmd/geth/testdata/logging/logtest-json.txt
@@ -49,3 +49,5 @@
 {"t":"2023-11-22T15:42:00.40835+08:00","lvl":"info","msg":"raw nil","res":null}
 {"t":"2023-11-22T15:42:00.408354+08:00","lvl":"info","msg":"(*uint64)(nil)","res":null}
 {"t":"2023-11-22T15:42:00.408361+08:00","lvl":"info","msg":"Using keys 't', 'lvl', 'time', 'level' and 'msg'","t":"t","time":"time","lvl":"lvl","level":"level","msg":"msg"}
+{"t":"2023-11-29T15:13:00.195655931+01:00","lvl":"info","msg":"Odd pair (1 attr)","key":null,"LOG_ERROR":"Normalized odd number of arguments by adding nil"}
+{"t":"2023-11-29T15:13:00.195681832+01:00","lvl":"info","msg":"Odd pair (3 attr)","key":"value","key2":null,"LOG_ERROR":"Normalized odd number of arguments by adding nil"}
diff --git a/cmd/geth/testdata/logging/logtest-logfmt.txt b/cmd/geth/testdata/logging/logtest-logfmt.txt
index 114569e467..25ca7c004b 100644
--- a/cmd/geth/testdata/logging/logtest-logfmt.txt
+++ b/cmd/geth/testdata/logging/logtest-logfmt.txt
@@ -49,3 +49,5 @@ t=xxxx-xx-xxTxx:xx:xx+xxxx lvl=info msg=nil-custom-struct res=<nil>
 t=xxxx-xx-xxTxx:xx:xx+xxxx lvl=info msg="raw nil" res=<nil>
 t=xxxx-xx-xxTxx:xx:xx+xxxx lvl=info msg=(*uint64)(nil) res=<nil>
 t=xxxx-xx-xxTxx:xx:xx+xxxx lvl=info msg="Using keys 't', 'lvl', 'time', 'level' and 'msg'" t=t time=time lvl=lvl level=level msg=msg
+t=xxxx-xx-xxTxx:xx:xx+xxxx lvl=info msg="Odd pair (1 attr)" key=<nil> LOG_ERROR="Normalized odd number of arguments by adding nil"
+t=xxxx-xx-xxTxx:xx:xx+xxxx lvl=info msg="Odd pair (3 attr)" key=value key2=<nil> LOG_ERROR="Normalized odd number of arguments by adding nil"
diff --git a/cmd/geth/testdata/logging/logtest-terminal.txt b/cmd/geth/testdata/logging/logtest-terminal.txt
index 4da3f49d46..ae6f633d70 100644
--- a/cmd/geth/testdata/logging/logtest-terminal.txt
+++ b/cmd/geth/testdata/logging/logtest-terminal.txt
@@ -50,3 +50,5 @@ INFO [xx-xx|xx:xx:xx.xxx] nil-custom-struct                        res=<nil>
 INFO [xx-xx|xx:xx:xx.xxx] raw nil                                  res=<nil>
 INFO [xx-xx|xx:xx:xx.xxx] (*uint64)(nil)                           res=<nil>
 INFO [xx-xx|xx:xx:xx.xxx] Using keys 't', 'lvl', 'time', 'level' and 'msg' t=t time=time lvl=lvl level=level msg=msg
+INFO [xx-xx|xx:xx:xx.xxx] Odd pair (1 attr)                        key=<nil>                  LOG_ERROR="Normalized odd number of arguments by adding nil"
+INFO [xx-xx|xx:xx:xx.xxx] Odd pair (3 attr)                        key=value                  key2=<nil> LOG_ERROR="Normalized odd number of arguments by adding nil"