diff --git a/helpers.go b/helpers.go
index a31e922c..aadeb6dc 100644
--- a/helpers.go
+++ b/helpers.go
@@ -155,6 +155,17 @@ func isZero(k interface{}) bool {
 	return false
 }
 
+func isZeroValue(v reflect.Value) bool {
+	if isZero(v.Interface()) {
+		return true
+	}
+	switch v.Kind() {
+	case reflect.Chan, reflect.Func, reflect.Interface, reflect.Map, reflect.Ptr, reflect.Slice:
+		return v.IsNil()
+	}
+	return false
+}
+
 func isStructZero(v reflect.Value) bool {
 	if !v.IsValid() {
 		return true
diff --git a/session_insert.go b/session_insert.go
index 5f8f7e1e..c9859b7a 100644
--- a/session_insert.go
+++ b/session_insert.go
@@ -674,7 +674,7 @@ func (session *Session) genInsertColumns(bean interface{}) ([]string, []interfac
 
 		// !evalphobia! set fieldValue as nil when column is nullable and zero-value
 		if _, ok := getFlagForColumn(session.statement.nullableMap, col); ok {
-			if col.Nullable && isZero(fieldValue.Interface()) {
+			if col.Nullable && isZeroValue(fieldValue) {
 				var nilValue *int
 				fieldValue = reflect.ValueOf(nilValue)
 			}
diff --git a/session_update.go b/session_update.go
index a26b15a6..18425ec3 100644
--- a/session_update.go
+++ b/session_update.go
@@ -517,7 +517,7 @@ func (session *Session) genUpdateColumns(bean interface{}) ([]string, []interfac
 
 		// !evalphobia! set fieldValue as nil when column is nullable and zero-value
 		if _, ok := getFlagForColumn(session.statement.nullableMap, col); ok {
-			if col.Nullable && isZero(fieldValue.Interface()) {
+			if col.Nullable && isZeroValue(fieldValue) {
 				var nilValue *int
 				fieldValue = reflect.ValueOf(nilValue)
 			}