diff --git a/pkg/detectors/detectors_test.go b/pkg/detectors/detectors_test.go
index 9c6a850e8..67c6b053c 100644
--- a/pkg/detectors/detectors_test.go
+++ b/pkg/detectors/detectors_test.go
@@ -16,15 +16,15 @@ func TestPrefixRegex(t *testing.T) {
 	}{
 		{
 			keywords: []string{"securitytrails"},
-			expected: `(?i)(?:securitytrails)(?:.|[\n\r]){0,40}`,
+			expected: `(?i:securitytrails)(?:.|[\n\r]){0,40}?`,
 		},
 		{
 			keywords: []string{"zipbooks"},
-			expected: `(?i)(?:zipbooks)(?:.|[\n\r]){0,40}`,
+			expected: `(?i:zipbooks)(?:.|[\n\r]){0,40}?`,
 		},
 		{
 			keywords: []string{"wrike"},
-			expected: `(?i)(?:wrike)(?:.|[\n\r]){0,40}`,
+			expected: `(?i:wrike)(?:.|[\n\r]){0,40}?`,
 		},
 	}
 	for _, tt := range tests {