diff --git a/ydb/core/fq/libs/common/util.cpp b/ydb/core/fq/libs/common/util.cpp
index 433709568eb1..f611abff40c5 100644
--- a/ydb/core/fq/libs/common/util.cpp
+++ b/ydb/core/fq/libs/common/util.cpp
@@ -62,18 +62,24 @@ class TIssueDatabaseRemover {
     TString DatabasePath; 
 };
 
+void EscapeBackslashes(TString& value) {
+    SubstGlobal(value, "\\", "\\\\");
+}
+
 }
 
 TString EscapeString(const TString& value,
                      const TString& enclosingSeq,
                      const TString& replaceWith) {
     auto escapedValue = value;
+    EscapeBackslashes(escapedValue);
     SubstGlobal(escapedValue, enclosingSeq, replaceWith);
     return escapedValue;
 }
 
 TString EscapeString(const TString& value, char enclosingChar) {
     auto escapedValue = value;
+    EscapeBackslashes(escapedValue);
     SubstGlobal(escapedValue,
                 TString{enclosingChar},
                 TStringBuilder{} << '\\' << enclosingChar);
diff --git a/ydb/core/fq/libs/common/util_ut.cpp b/ydb/core/fq/libs/common/util_ut.cpp
index 3e5a7d3e1202..3e209c1349c3 100644
--- a/ydb/core/fq/libs/common/util_ut.cpp
+++ b/ydb/core/fq/libs/common/util_ut.cpp
@@ -23,7 +23,9 @@ Y_UNIT_TEST_SUITE(EscapingBasics) {
         UNIT_ASSERT_VALUES_EQUAL(EscapeString("some_secret1", '"'), "some_secret1");
         UNIT_ASSERT_VALUES_EQUAL(EscapeString("some_secret1", "}+{", "[*]"), "some_secret1");
         UNIT_ASSERT_VALUES_EQUAL(EscapeString("some\"_\"secret1", '"'), "some\\\"_\\\"secret1");
+        UNIT_ASSERT_VALUES_EQUAL(EscapeString("some\"_\\\"secret1", '"'), "some\\\"_\\\\\\\"secret1");
         UNIT_ASSERT_VALUES_EQUAL(EscapeString("some}+{_}+{secret1", "}+{", "[*]"), "some[*]_[*]secret1");
+        UNIT_ASSERT_VALUES_EQUAL(EscapeString("some}+{\\}+{secret1", "}+{", "[*]"), "some[*]\\\\[*]secret1");
     }
 
     Y_UNIT_TEST(EncloseAndEscapeStringShouldWork) {
@@ -31,7 +33,9 @@ Y_UNIT_TEST_SUITE(EscapingBasics) {
         UNIT_ASSERT_VALUES_EQUAL(EncloseAndEscapeString("some_secret1\nsome_secret2", "}+{", "[*]"), "}+{some_secret1\nsome_secret2}+{");
 
         UNIT_ASSERT_VALUES_EQUAL(EncloseAndEscapeString("some\"_\"secret1", '"'), "\"some\\\"_\\\"secret1\"");
+        UNIT_ASSERT_VALUES_EQUAL(EncloseAndEscapeString("some\"_\\\"secret1", '"'), "\"some\\\"_\\\\\\\"secret1\"");
         UNIT_ASSERT_VALUES_EQUAL(EncloseAndEscapeString("some_secret1}+{\n}+{some_secret2", "}+{", "[*]"), "}+{some_secret1[*]\n[*]some_secret2}+{");
+        UNIT_ASSERT_VALUES_EQUAL(EncloseAndEscapeString("some_secret1}+{\\}+{some_secret2", "}+{", "[*]"), "}+{some_secret1[*]\\\\[*]some_secret2}+{");
     }
 }