diff --git a/ch10.asciidoc b/ch10.asciidoc
index 54868a8f..a908de7a 100644
--- a/ch10.asciidoc
+++ b/ch10.asciidoc
@@ -258,6 +258,7 @@ The calculation can be seen in function +GetBlockSubsidy+ in the Bitcoin Core cl
 [[getblocksubsidy_source]]
 .Calculating the block reward—Function GetBlockSubsidy, Bitcoin Core Client, main.cpp
 ====
+[role="c_less_space"]
 [source, cpp]
 ----
 CAmount GetBlockSubsidy(int nHeight, const Consensus::Params& consensusParams)