1 files changed, 7 insertions, 3 deletions
diff --git a/true.go b/true.go
index 927a77d..31d909c 100644
--- a/true.go
+++ b/true.go
@@ -1,6 +1,7 @@
 package env
 
 import (
+	"os"
 	"strings"
 )
 
@@ -11,10 +12,13 @@ func True(flag string) bool {
 		return false
 	}
 	found := envPB.FindByVar(flag)
-	if found == nil {
-		return false
+	if found != nil {
+		if strings.ToLower(found.Value) == "true" {
+			return true
+		}
 	}
-	if strings.ToLower(found.Value) == "true" {
+	upper := strings.ToUpper(flag)
+	if os.Getenv(upper) == "true" {
 		return true
 	}
 	return false