diff --git a/extensions/core/monero.json b/extensions/core/monero.json
index 182e49a..ff0b3ee 100644
--- a/extensions/core/monero.json
+++ b/extensions/core/monero.json
@@ -162,7 +162,7 @@
           "parameters": {
             "mandatory": false,
             "text": [
-              "#define MONEY_SUPPLY ((uint64_t)%s)"
+              "#define MONEY_SUPPLY ((uint64_t)(%s))"
             ],
             "var": "MONEY_SUPPLY"
           }
@@ -184,7 +184,7 @@
           "parameters": {
             "mandatory": false,
             "text": [
-              "#define FINAL_SUBSIDY_PER_MINUTE ((uint64_t)%s)"
+              "#define FINAL_SUBSIDY_PER_MINUTE ((uint64_t)(%s))"
             ],
             "var": "FINAL_SUBSIDY_PER_MINUTE"
           }
@@ -266,7 +266,7 @@
           "parameters": {
             "mandatory": false,
             "text": [
-              "#define COIN ((uint64_t)%s)"
+              "#define COIN ((uint64_t)(%s))"
             ],
             "var": "COIN"
           }
@@ -277,7 +277,7 @@
           "parameters": {
             "mandatory": false,
             "text": [
-              "uint64_t const DEFAULT_DUST_THRESHOLD = ((uint64_t)%s);"
+              "uint64_t const DEFAULT_DUST_THRESHOLD = ((uint64_t)(%s));"
             ],
             "var": "DEFAULT_DUST_THRESHOLD"
           }
diff --git a/install_dependencies.sh b/install_dependencies.sh
index acf1798..a76a2d5 100644
--- a/install_dependencies.sh
+++ b/install_dependencies.sh
@@ -86,7 +86,7 @@ function installUbuntu {
 
   if [[ $DISTRIB_RELEASE == 16.04* ]] ; then
     sudo apt-get update
-    sudo apt-get -y install build-essential python-dev gcc-4.9 g++-4.9 git cmake pkg-config libboost1.58-all-dev libunbound-dev libevent-dev  libssl-dev
+    sudo apt-get -y install build-essential python-dev gcc-4.9 g++-4.9 git cmake pkg-config libboost1.58-all-dev libunbound-dev libevent-dev  libssl-dev libzmq3-dev 
     export CXXFLAGS="-std=gnu++11"
 
     doneMessage