diff --git a/core/src/main/kotlin/org/evomaster/core/problem/httpws/auth/AuthUtils.kt b/core/src/main/kotlin/org/evomaster/core/problem/httpws/auth/AuthUtils.kt
index 9ab65c621e..cb8afa5e8d 100644
--- a/core/src/main/kotlin/org/evomaster/core/problem/httpws/auth/AuthUtils.kt
+++ b/core/src/main/kotlin/org/evomaster/core/problem/httpws/auth/AuthUtils.kt
@@ -70,6 +70,7 @@ object AuthUtils {
                 }
                 TokenHandling.ExtractFrom.HEADER -> {
                     val header = response.getHeaderString(data.extractSelector)
+                    response.close()
                     if(header == null || header.isEmpty()){
                         log.warn("Failed login. No token to extract from header '${data.extractSelector}'")
                         continue
@@ -266,4 +267,4 @@ object AuthUtils {
     }
 
 
-}
\ No newline at end of file
+}