diff --git a/app/src/main/java/helium314/keyboard/latin/inputlogic/InputLogic.java b/app/src/main/java/helium314/keyboard/latin/inputlogic/InputLogic.java
index 76fdf66c6..9deabf6d0 100644
--- a/app/src/main/java/helium314/keyboard/latin/inputlogic/InputLogic.java
+++ b/app/src/main/java/helium314/keyboard/latin/inputlogic/InputLogic.java
@@ -452,6 +452,8 @@ public final class InputLogic {
                 //  to the current word instead of considering the cursor position
                 //  position is actually not visible to the combiner, how to fix?
                 processedEvent = mWordComposer.processEvent(hangulDecodedEvent);
+                if (event.getMKeyCode() == KeyCode.DELETE)
+                    mWordComposer.resetInvalidCursorPosition();
             } else {
                 mWordComposer.setHangul(false);
                 final boolean wasComposingWord = mWordComposer.isComposingWord();
diff --git a/app/src/test/java/helium314/keyboard/latin/InputLogicTest.kt b/app/src/test/java/helium314/keyboard/latin/InputLogicTest.kt
index 1fd8dea0b..afef5bbf0 100644
--- a/app/src/test/java/helium314/keyboard/latin/InputLogicTest.kt
+++ b/app/src/test/java/helium314/keyboard/latin/InputLogicTest.kt
@@ -160,6 +160,16 @@ class InputLogicTest {
         assertEquals("ㅛ.", text)
     }
 
+    // see issue 1551 (debug only)
+    @Test fun deleteHangul() {
+        reset()
+        currentScript = ScriptUtils.SCRIPT_HANGUL
+        setText("ㅛㅛ ")
+        functionalKeyPress(KeyCode.DELETE)
+        functionalKeyPress(KeyCode.DELETE)
+        functionalKeyPress(KeyCode.DELETE)
+    }
+
     @Test fun separatorUnselectsWord() {
         reset()
         setText("hello")