diff --git a/src/lib/SoftHSM.cpp b/src/lib/SoftHSM.cpp
index 0aaa427c..8a2a73c1 100644
--- a/src/lib/SoftHSM.cpp
+++ b/src/lib/SoftHSM.cpp
@@ -2455,7 +2455,7 @@ CK_RV SoftHSM::AsymEncryptInit(CK_SESSION_HANDLE hSession, CK_MECHANISM_PTR pMec
 		return CKR_KEY_FUNCTION_NOT_PERMITTED;
 
 	// Check if the specified mechanism is allowed for the key
-	if (!isMechanismPermitted(key, pMechanism))
+	if (!isMechanismPermitted(key, pMechanism->mechanism))
 		return CKR_MECHANISM_INVALID;
 
 	// Get key info