diff --git a/reactos/drivers/crypto/ksecdd/random.c b/reactos/drivers/crypto/ksecdd/random.c
index 392ad0f70ca..1d1168a8776 100644
--- a/reactos/drivers/crypto/ksecdd/random.c
+++ b/reactos/drivers/crypto/ksecdd/random.c
@@ -31,11 +31,13 @@ KsecGenRandom(
     PVOID Buffer,
     SIZE_T Length)
 {
+    LARGE_INTEGER TickCount;
     ULONG i, RandomValue;
     PULONG P;
 
     /* Try to generate a more random seed */
-    KsecRandomSeed ^= _rotl(KeTickCount.LowPart, (KsecRandomSeed % 23));
+    KeQueryTickCount(&TickCount);
+    KsecRandomSeed ^= _rotl(TickCount.LowPart, (KsecRandomSeed % 23));
 
     P = Buffer;
     for (i = 0; i < Length / sizeof(ULONG); i++)
@@ -94,7 +96,7 @@ KsecGatherEntropyData(
     PTEB Teb;
     PPEB Peb;
     PWSTR String;
-    ULONG ReturnLength;
+    SIZE_T ReturnLength;
     NTSTATUS Status;
 
     /* Query some generic values */
@@ -125,7 +127,7 @@ KsecGatherEntropyData(
             /* Update the MD4 context from the environment data */
             MD4Update(&Md4Context,
                       (PUCHAR)Peb->ProcessParameters->Environment,
-                      (PUCHAR)String - (PUCHAR)Peb->ProcessParameters->Environment);
+                      (ULONG)((PUCHAR)String - (PUCHAR)Peb->ProcessParameters->Environment));
         }
         _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
         {