diff --git a/python/tutorials/tutorial-1-pbmc_scrna_scanpy.ipynb b/python/tutorials/tutorial-1-pbmc_scrna_scanpy.ipynb
index d8751f6..14032f7 100644
--- a/python/tutorials/tutorial-1-pbmc_scrna_scanpy.ipynb
+++ b/python/tutorials/tutorial-1-pbmc_scrna_scanpy.ipynb
@@ -153,7 +153,7 @@
    "metadata": {},
    "outputs": [],
    "source": [
-    "# here we remove the cells and genes that have more than 100 zero entries\n",
+    "# here we remove the cells and genes that have less than 100 non-zero entries\n",
     "# X_sub is the filtered count matrix, index are the indices of the remainder\n",
     "X_sub,index = stabilize_matrix(adata.X,threshold=100)"
    ]