diff --git a/onnxruntime/core/mlas/lib/x86_64/jblas/jblas/jit_blas_parallel.h b/onnxruntime/core/mlas/lib/x86_64/jblas/jblas/jit_blas_parallel.h
index e32f8485b9161..a1607c9012187 100644
--- a/onnxruntime/core/mlas/lib/x86_64/jblas/jblas/jit_blas_parallel.h
+++ b/onnxruntime/core/mlas/lib/x86_64/jblas/jblas/jit_blas_parallel.h
@@ -393,7 +393,9 @@ class SchedulerKBlock : public Scheduler2D {
     int BlkNum = utils::updiv(mSize[2], mKBlock);
     int KSplitSize = utils::padto(utils::updiv(mSize[2], KSplitStage), mStep[2]);
     mBlock[1] = NRef < mThdSize[1] ? NRef : mThdSize[1];
-    if (KSplitSize >= mKBlock) {
+    if (KSplitStage * mStep[2] >= mSize[2]) {
+      mBlock[2] = mSize[2];
+    } else if (KSplitSize >= mKBlock) {
       mBlock[2] = mKBlock;
     } else {
       int scale = utils::downdiv(KSplitStage, BlkNum);
@@ -403,7 +405,7 @@ class SchedulerKBlock : public Scheduler2D {
         }
       }
       mBlock[2] = utils::downdiv(mKBlock, scale);
-	  mBlock[2] =utils::padto_le(mBlock[2],mStep[2]);
+      mBlock[2] = utils::padto_le(mBlock[2], mStep[2]);
     }      
     size_t size_remain = mL2Size - mBlock[1] * mBlock[2] * mEleSize[1];
     // MBlock*KBlock*ASize+MBlock*NBlock*CSize*2<=size_remain