diff --git a/test/test_util.py b/test/test_util.py
index e09b52e40..91447b8b5 100644
--- a/test/test_util.py
+++ b/test/test_util.py
@@ -499,6 +499,9 @@ def test_is_weaviate_client_too_old(current_version: str, latest_version: str, t
         ('\\\\"', '\\\\\\"'),
         ('\\\\"', '\\\\\\"'),
         ('\\\\\\"', '\\\\\\"'),
+        ("foo\nbar", "foo bar"),
+        ("foo\r\nbar", "foo bar"),
+        ("foo\rbar", "foo bar"),
     ],
 )
 def test_sanitize_str(in_str: str, out_str: str) -> None:
diff --git a/weaviate/util.py b/weaviate/util.py
index be61fe389..dc7ed2d49 100644
--- a/weaviate/util.py
+++ b/weaviate/util.py
@@ -497,7 +497,9 @@ def is_weaviate_domain(url: str) -> bool:
 
 
 def strip_newlines(s: str) -> str:
-    return s.replace("\n", " ")
+    # GraphQL treats CR as a line terminator inside string literals just like LF,
+    # so a CRLF value must collapse to one space instead of leaving a bare CR.
+    return s.replace("\r\n", "\n").replace("\r", "\n").replace("\n", " ")
 
 
 def _sanitize_str(value: str) -> str: