diff --git a/java/java-psi-api/src/com/intellij/psi/util/PsiLiteralUtil.java b/java/java-psi-api/src/com/intellij/psi/util/PsiLiteralUtil.java
index 303c79e9ccd6..dd1e0c0ae831 100644
--- a/java/java-psi-api/src/com/intellij/psi/util/PsiLiteralUtil.java
+++ b/java/java-psi-api/src/com/intellij/psi/util/PsiLiteralUtil.java
@@ -227,13 +227,11 @@ public class PsiLiteralUtil {
   private static int parseBackSlash(@NotNull String str, int idx) {
     char c = str.charAt(idx);
     if (c != '\\') return -1;
-    int nextIdx = parseHexBackSlash(str, idx);
-    if (nextIdx > 0) return nextIdx;
-    nextIdx = parseOctalBackSlash(str, idx);
+    int nextIdx = parseEscapedBackSlash(str, idx);
     return nextIdx > 0 ? nextIdx : idx + 1;
   }
 
-  private static int parseHexBackSlash(@NotNull String str, int idx) {
+  private static int parseEscapedBackSlash(@NotNull String str, int idx) {
     int next = idx + 1;
     if (next >= str.length() || str.charAt(next) != 'u') return -1;
     while (str.charAt(next) == 'u') {
@@ -248,16 +246,4 @@ public class PsiLiteralUtil {
     }
     return -1;
   }
-
-  private static int parseOctalBackSlash(@NotNull String str, int idx) {
-    int next = idx + 1;
-    if (next + 2 >= str.length()) return -1;
-    try {
-      int code = Integer.parseInt(str.substring(next, next + 3), 8);
-      if (code == '\\') return next + 3;
-    }
-    catch (NumberFormatException ignored) {
-    }
-    return -1;
-  }
 }
\ No newline at end of file
diff --git a/java/java-tests/testData/inspection/textBlockBackwardMigration/afterEscapeSequence.java b/java/java-tests/testData/inspection/textBlockBackwardMigration/afterEscapeSequence.java
index 0bc2182875a2..44fda43a06c6 100644
--- a/java/java-tests/testData/inspection/textBlockBackwardMigration/afterEscapeSequence.java
+++ b/java/java-tests/testData/inspection/textBlockBackwardMigration/afterEscapeSequence.java
@@ -3,7 +3,7 @@
 class TextBlockMigration {
 
   void escapeSequence() {
-    String oneLineTextBlock = "\"this is one \"line\"\n text block\\\"\n";
+    String oneLineTextBlock = "\"this is one \"line\"\n text block\134\\\"\n";
   }
 
 }
\ No newline at end of file
diff --git a/java/java-tests/testData/inspection/textBlockBackwardMigration/beforeEscapeSequence.java b/java/java-tests/testData/inspection/textBlockBackwardMigration/beforeEscapeSequence.java
index fca419921461..18464ec16b60 100644
--- a/java/java-tests/testData/inspection/textBlockBackwardMigration/beforeEscapeSequence.java
+++ b/java/java-tests/testData/inspection/textBlockBackwardMigration/beforeEscapeSequence.java
@@ -4,7 +4,7 @@ class TextBlockMigration {
 
   void escapeSequence() {
     String oneLineTextBlock = """
-        \u005c"this is one "line"\n text <caret>block\134\"
+        \u005c"this is one "line"\n text <caret>block\134\u005c\\"
         """;
   }