diff --git a/Makefile b/Makefile
index d1cb213..9d33667 100644
--- a/Makefile
+++ b/Makefile
@@ -5,7 +5,7 @@ MAINTAINER_NAME = Jose Diaz-Gonzalez
 REPOSITORY = go-procfile-util
 HARDWARE = $(shell uname -m)
 SYSTEM_NAME  = $(shell uname -s | tr '[:upper:]' '[:lower:]')
-BASE_VERSION ?= 0.8.1
+BASE_VERSION ?= 0.8.2
 IMAGE_NAME ?= $(MAINTAINER)/$(REPOSITORY)
 PACKAGECLOUD_REPOSITORY ?= dokku/dokku-betafish
 
diff --git a/main.go b/main.go
index 35c8c2d..6d4a931 100644
--- a/main.go
+++ b/main.go
@@ -201,7 +201,7 @@ func expandEnv(e procfileEntry, envPath string, allowEnv bool, defaultPort int)
 			return os.Getenv("PS")
 		}
 		if key == portEnvVar {
-			return string(defaultPort)
+			return strconv.Itoa(defaultPort)
 		}
 		return ""
 	}