diff --git a/lib/api.js b/lib/api.js
index dec6710..fa0a0a8 100644
--- a/lib/api.js
+++ b/lib/api.js
@@ -50,8 +50,8 @@ class API {
 
     this.log = config.log || console.log;
 
-    this.gasLimit = 0xfffffffffff;
-    this.gasLimitString = "0xfffffffffff";
+    this.gasLimit = 0xffffffffff;            // default "gas sent" with transactions
+    this.gasLimitString = "0xfffffffffff";   // block gas limit for ganache (higher than "gas sent")
     this.gasPrice = 0x01;
 
     this.istanbulReporter = config.istanbulReporter || ['html', 'lcov', 'text'];