diff --git a/src/rpc/abc.cpp b/src/rpc/abc.cpp
--- a/src/rpc/abc.cpp
+++ b/src/rpc/abc.cpp
@@ -50,17 +50,20 @@
         ebs = request.params[0].get_int64();
     } else {
         std::string temp = request.params[0].get_str();
-        if (temp[0] == '-') boost::throw_exception(boost::bad_lexical_cast());
+        if (temp[0] == '-') {
+            boost::throw_exception(boost::bad_lexical_cast());
+        }
         ebs = boost::lexical_cast<uint64_t>(temp);
     }
 
     // Do not allow maxBlockSize to be set below historic 1MB limit
-    if (ebs <= LEGACY_MAX_BLOCK_SIZE)
+    if (ebs <= LEGACY_MAX_BLOCK_SIZE) {
         throw JSONRPCError(
             RPC_INVALID_PARAMETER,
             std::string(
                 "Invalid parameter, excessiveblock must be larger than ") +
                 std::to_string(LEGACY_MAX_BLOCK_SIZE));
+    }
 
     // Set the new max block size.
     if (!config.SetMaxBlockSize(ebs)) {