diff --git a/query/query.go b/query/query.go
index 4f8bfcd..b02c62a 100644
--- a/query/query.go
+++ b/query/query.go
@@ -95,7 +95,7 @@ const (
 	inMySQLCode              // /*! MySQL-specific code */
 )
 
-var stateName map[byte]string = map[byte]string{
+var stateName = map[byte]string{
 	0:  "unknown",
 	1:  "inWord",
 	2:  "inNumber",
@@ -119,7 +119,7 @@ var stateName map[byte]string = map[byte]string{
 }
 
 // Debug prints very verbose tracing information to STDOUT.
-var Debug bool = false
+var Debug = true
 
 // ReplaceNumbersInWords enables replacing numbers in words. For example:
 // `SELECT c FROM org235.t` -> `SELECT c FROM org?.t`. For more examples
@@ -131,14 +131,15 @@ var ReplaceNumbersInWords = false
 //   - Collapse whitespace
 //   - Remove comments
 //   - Lowercase everything
-// Additional trasnformations are performed which change the syntax of the
+// Additional transformations are performed which change the syntax of the
 // original query without affecting its performance characteristics. For
 // example, "ORDER BY col ASC" is the same as "ORDER BY col", so "ASC" in the
 // fingerprint is removed.
 func Fingerprint(q string) string {
 	q += " " // need range to run off end of original query
 	prevWord := ""
-	f := make([]byte, len(q))
+	// allocate enough memory to replace (x) with (?+).
+	f := make([]byte, len(q)+len(q)/3)
 	fi := 0
 	pr := rune(0) // previous rune
 	s := unknown  // current state
diff --git a/query/query_test.go b/query/query_test.go
index 1daf5fd..eb56020 100644
--- a/query/query_test.go
+++ b/query/query_test.go
@@ -229,6 +229,14 @@ func TestFingerprintBasic(t *testing.T) {
 		query.Fingerprint(q),
 	)
 
+	// Fingerprint Insert into tables;
+	q = "insert into t3 values(2);"
+	assert.Equal(
+		t,
+		"insert into t3 values(?+);",
+		query.Fingerprint(q),
+	)
+
 	// Fingerprint /* -- comment */ SELECT (bug 1174956)
 	q = "/* -- S++ SU ABORTABLE -- spd_user: rspadim */SELECT SQL_SMALL_RESULT SQL_CACHE DISTINCT centro_atividade FROM est_dia WHERE unidade_id=1001 AND item_id=67 AND item_id_red=573"
 	assert.Equal(
@@ -237,6 +245,13 @@ func TestFingerprintBasic(t *testing.T) {
 		query.Fingerprint(q),
 	)
 
+	q = "insert into foo (a) values(0)"
+	assert.Equal(
+		t,
+		"insert into foo (a) values(?+)",
+		query.Fingerprint(q),
+	)
+
 	q = "INSERT INTO t (ts) VALUES (NOW())"
 	assert.Equal(
 		t,