diff --git a/scapy.py b/scapy.py
index <HASH>..<HASH> 100755
--- a/scapy.py
+++ b/scapy.py
@@ -1619,7 +1619,7 @@ class ASN1_VIDEOTEX_STRING(ASN1_STRING):
 class ASN1_UTC_TIME(ASN1_STRING):
     tag = ASN1_Class_UNIVERSAL.UTC_TIME
 
-class ASN1_TIME_TICKS(ASN1_STRING):
+class ASN1_TIME_TICKS(ASN1_INTEGER):
     tag = ASN1_Class_UNIVERSAL.TIME_TICKS
 
 class ASN1_BOOLEAN(ASN1_INTEGER):
ASN1_TIME_TICKS wrongly typed as a string instead of an integer