diff --git a/generate/generate.go b/generate/generate.go
index 816305f0..886faeba 100644
--- a/generate/generate.go
+++ b/generate/generate.go
@@ -322,6 +322,7 @@ func NewFromTemplate(r io.Reader) (Generator, error) {
 func createEnvCacheMap(env []string) map[string]int {
 	envMap := make(map[string]int, len(env))
 	for i, val := range env {
+		val, _, _ = strings.Cut(val, "=")
 		envMap[val] = i
 	}
 	return envMap