diff --git a/qapi/block.json b/qapi/block.json
index 0f25ce3961..535892fddc 100644
--- a/qapi/block.json
+++ b/qapi/block.json
@@ -547,7 +547,7 @@
 #
 # Example:
 #
-# set new histograms for all io types with intervals [0, 10), [10,
+# Set new histograms for all io types with intervals [0, 10), [10,
 # 50), [50, 100), [100, +inf):
 #
 # -> { "execute": "block-latency-histogram-set",
@@ -557,7 +557,7 @@
 #
 # Example:
 #
-# set new histogram only for write, other histograms will remain not
+# Set new histogram only for write, other histograms will remain not
 # changed (or not created):
 #
 # -> { "execute": "block-latency-histogram-set",
@@ -567,7 +567,7 @@
 #
 # Example:
 #
-# set new histograms with the following intervals:   read, flush: [0,
+# Set new histograms with the following intervals:   read, flush: [0,
 # 10), [10, 50), [50, 100), [100, +inf)   write: [0, 1000), [1000,
 # 5000), [5000, +inf)
 #
@@ -579,7 +579,7 @@
 #
 # Example:
 #
-# remove all latency histograms:
+# Remove all latency histograms:
 #
 # -> { "execute": "block-latency-histogram-set",
 #      "arguments": { "id": "drive0" } }