diff --git a/reactos/lib/secur32/secur32.def b/reactos/lib/secur32/secur32.def
index fb89b17cbf0..9619abf7f8e 100644
--- a/reactos/lib/secur32/secur32.def
+++ b/reactos/lib/secur32/secur32.def
@@ -8,7 +8,7 @@ LsaLookupAuthenticationPackage@12
 LsaFreeReturnBuffer@4
 LsaCallAuthenticationPackage@28
 ;AcceptSecurityContext@36
-;AcquireCredentialsHandleA@36
+AcquireCredentialsHandleA@36
 ;AcquireCredentialsHandleW@36
 ;@AddCredentialsA
 ;@AddCredentialsW
@@ -39,7 +39,7 @@ GetUserNameExW@12
 ;@ImportSecurityContextW
 ;@InitSecurityInterfaceA
 ;@InitSecurityInterfaceW
-;InitializeSecurityContextA@48
+InitializeSecurityContextA@48
 ;InitializeSecurityContextW@48
 LsaEnumerateLogonSessions@8
 LsaGetLogonSessionData@8
diff --git a/reactos/lib/secur32/sspi.c b/reactos/lib/secur32/sspi.c
index b015257070f..8d234dbca21 100644
--- a/reactos/lib/secur32/sspi.c
+++ b/reactos/lib/secur32/sspi.c
@@ -35,3 +35,42 @@ FreeContextBuffer (
 	DPRINT1("%s() not implemented!\n", __FUNCTION__);
 	return ERROR_CALL_NOT_IMPLEMENTED;
 }
+
+SECURITY_STATUS
+WINAPI
+AcquireCredentialsHandleA ( 
+    SEC_CHAR* pszPrincipal,
+    SEC_CHAR* pszPackage,
+    ULONG fUsage,
+    PLUID pID,
+    PVOID pAuth,
+    SEC_GET_KEY_FN pGetKeyFn,
+    PVOID pvGetKeyArgument,
+    PCredHandle phCred,
+    PTimeStamp pExpires
+    )
+{
+	DPRINT1("%s() not implemented!\n", __FUNCTION__);
+	return ERROR_CALL_NOT_IMPLEMENTED;
+}
+
+SECURITY_STATUS
+WINAPI
+InitializeSecurityContextA ( 
+    PCredHandle phCred,
+    PCtxtHandle phContext,
+    SEC_CHAR* pszTarget,
+    ULONG fContextReq,
+    ULONG Reserved,
+    ULONG TargetData,
+    PSecBufferDesc pInput,
+    ULONG Reserved2,
+    PCtxtHandle phNewContext,
+    PSecBufferDesc pOut,
+    PULONG pfContextAttributes,
+    PTimeStamp pExpires
+    )
+{
+	DPRINT1("%s() not implemented!\n", __FUNCTION__);
+	return ERROR_CALL_NOT_IMPLEMENTED;
+}