diff --git a/config/config.go b/config/config.go
index 3b68294..07ba93d 100644
--- a/config/config.go
+++ b/config/config.go
@@ -6,6 +6,7 @@ package config
 import (
 	"github.com/kelseyhightower/envconfig"
 	"github.com/rs/zerolog/log"
+	"strings"
 )
 
 var (
@@ -14,7 +15,18 @@ var (
 
 func ParseConfiguration() {
 	err := envconfig.Process("steadybit_extension", &Config)
+	Config.AssumeRoles = trimSpaces(Config.AssumeRoles)
+	Config.Regions = trimSpaces(Config.Regions)
+	Config.EnrichEc2DataForTargetTypes = trimSpaces(Config.EnrichEc2DataForTargetTypes)
 	if err != nil {
 		log.Fatal().Err(err).Msgf("Failed to parse configuration from environment.")
 	}
 }
+
+func trimSpaces(orig []string) []string {
+	var trimmed []string
+	for _, s := range orig {
+		trimmed = append(trimmed, strings.TrimSpace(s))
+	}
+	return trimmed
+}