diff --git a/caffe2fluid/doc/ArgMax.md b/caffe2fluid/doc/ArgMax.md
index 9576ec63ec6f55fef9764d97b4211083d57e750f..532532c2559163ba0b793f4c92551677d74dea0b 100644
--- a/caffe2fluid/doc/ArgMax.md
+++ b/caffe2fluid/doc/ArgMax.md
@@ -8,7 +8,7 @@ layer {
     type: "ArgMax"
     bottom: "data"
     top: "argmax"	
-    argmax_param{
+    argmax_param {
 	out_max_val: false
 	top_k: 1
 	axis: 0