diff --git a/plugins/dbms/postgresql/fingerprint.py b/plugins/dbms/postgresql/fingerprint.py
index 29d0af462..ed090c985 100644
--- a/plugins/dbms/postgresql/fingerprint.py
+++ b/plugins/dbms/postgresql/fingerprint.py
@@ -107,7 +107,9 @@ class Fingerprint(GenericFingerprint):
             infoMsg = "actively fingerprinting %s" % DBMS.PGSQL
             logger.info(infoMsg)
 
-            if inject.checkBooleanExpression("2=(SELECT DIV(6, 3))"):
+            if inject.checkBooleanExpression("LENGTH(to_char(1, 'EEEE'))>0"):
+                Backend.setVersion(">= 9.0.3")
+            elif inject.checkBooleanExpression("2=(SELECT DIV(6, 3))"):
                 Backend.setVersion(">= 8.4.0")
             elif inject.checkBooleanExpression("EXTRACT(ISODOW FROM CURRENT_TIMESTAMP)<8"):
                 Backend.setVersionList([">= 8.3.0", "< 8.4"])