diff --git a/client/driver/logging/syslog_parser_unix.go b/client/driver/logging/syslog_parser_unix.go
index e39ac7cf7..4e0fec555 100644
--- a/client/driver/logging/syslog_parser_unix.go
+++ b/client/driver/logging/syslog_parser_unix.go
@@ -92,13 +92,14 @@ func (d *DockerLogParser) logContentIndex(line []byte) int {
 			}
 		}
 	}
-	// then the colon is what seperates it
+	// then the colon is what seperates it, followed by a space
 	for i := cursor; i < len(line); i++ {
-		if line[i] == ':' {
-			cursor = i
+		if line[i] == ':' && i+1 < len(line) && line[i+1] == ' ' {
+			cursor = i + 1
 			break
 		}
 	}
+	// return the cursor to the next character
 	return cursor + 1
 }
 
diff --git a/client/driver/logging/syslog_parser_unix_test.go b/client/driver/logging/syslog_parser_unix_test.go
index 80adc0007..5aa3345ec 100644
--- a/client/driver/logging/syslog_parser_unix_test.go
+++ b/client/driver/logging/syslog_parser_unix_test.go
@@ -3,6 +3,7 @@
 package logging
 
 import (
+	"bytes"
 	"log"
 	"log/syslog"
 	"os"
@@ -21,7 +22,7 @@ func TestLogParser_Priority(t *testing.T) {
 	}
 
 	idx := d.logContentIndex(line)
-	expected := 68
+	expected := bytes.Index(line, []byte("1:C 10 Feb 18:16:43.391"))
 	if idx != expected {
 		t.Fatalf("expected idx: %v, got: %v", expected, idx)
 	}
@@ -39,7 +40,7 @@ func TestLogParser_Priority_UnixFormatter(t *testing.T) {
 	}
 
 	idx := d.logContentIndex(line)
-	expected := 48
+	expected := bytes.Index(line, []byte("1:C 10 Feb 18:16:43.391"))
 	if idx != expected {
 		t.Fatalf("expected idx: %v, got: %v", expected, idx)
 	}