diff --git a/src/DIRAC/FrameworkSystem/DB/ProxyDB.py b/src/DIRAC/FrameworkSystem/DB/ProxyDB.py
index 6cab271d782..818778cef69 100755
--- a/src/DIRAC/FrameworkSystem/DB/ProxyDB.py
+++ b/src/DIRAC/FrameworkSystem/DB/ProxyDB.py
@@ -535,13 +535,20 @@ def getProxyStrength(self, userDN, userGroup=None, vomsAttr=None):
         :param vomsAttr: VOMS attr we plan to add on the proxy
         """
         # Look in the cache
-        retVal = self.__getPemAndTimeLeft(userDN, userGroup, vomsAttr=vomsAttr)
+        retVal = Registry.getProxyProvidersForDN(userDN)
+
         if retVal["OK"]:
-            pemData = retVal["Value"][0]
-            chain = X509Chain()
-            retVal = chain.loadProxyFromString(pemData)
-            if retVal["OK"]:
-                return chain.getStrength()
+            providers = retVal["Value"]
+            providers.append("Certificate")
+            for proxyProvider in providers:
+
+                retVal = self.__getPemAndTimeLeft(userDN, userGroup, vomsAttr=vomsAttr, proxyProvider=proxyProvider)
+                if retVal["OK"]:
+                    pemData = retVal["Value"][0]
+                    chain = X509Chain()
+                    retVal = chain.loadProxyFromString(pemData)
+                    if retVal["OK"]:
+                        return chain.getStrength()
 
         return retVal
 
@@ -589,7 +596,11 @@ def __getPemAndTimeLeft(self, userDN, userGroup=None, vomsAttr=None, proxyProvid
                     result = chain.loadProxyFromString(record[0])
                     if not result["OK"]:
                         return result
-                    result = chain.generateProxyToString(record[1], diracGroup=userGroup, rfc=True)
+                    result = chain.getStrength()
+                    if not result["OK"]:
+                        return result
+                    strength = result["Value"]
+                    result = chain.generateProxyToString(record[1], diracGroup=userGroup, strength=strength, rfc=True)
                     if not result["OK"]:
                         return result
                     return S_OK((result["Value"], record[1]))