diff --git a/app/languages/definitions/Japanese.yml b/app/languages/definitions/Japanese.yml
index 391529de..e4ffedf5 100644
--- a/app/languages/definitions/Japanese.yml
+++ b/app/languages/definitions/Japanese.yml
@@ -18,8 +18,8 @@ layout:
   - [w, x, y, z] # 9
 filterBySounds: yes
 sounds:
-  - [Qh,0] # Hiragana prefix. For identifying and loading only the specific characters in Hiragana mode.
-  - [Qk,1] # Katakana prefix. The prefixed ones will appear only in Katakana mode.
+  - [Qh,01] # Hiragana prefix. For identifying and loading only the specific characters in Hiragana mode.
+  - [Qk,0] # Katakana prefix. The prefixed ones will appear only in Katakana mode.
   # All others will appear in Predictive mode
   - [Ql,1] # ー
   - [A,2]
diff --git a/app/src/main/java/io/github/sspanak/tt9/ime/modes/predictions/KanaPredictions.java b/app/src/main/java/io/github/sspanak/tt9/ime/modes/predictions/KanaPredictions.java
index 2e0490a3..4b51a275 100644
--- a/app/src/main/java/io/github/sspanak/tt9/ime/modes/predictions/KanaPredictions.java
+++ b/app/src/main/java/io/github/sspanak/tt9/ime/modes/predictions/KanaPredictions.java
@@ -10,14 +10,14 @@ import io.github.sspanak.tt9.languages.exceptions.InvalidLanguageCharactersExcep
 import io.github.sspanak.tt9.preferences.settings.SettingsStore;
 
 public class KanaPredictions extends IdeogramPredictions {
-	private final char SEQUENCE_PREFIX;
+	private final String SEQUENCE_PREFIX;
 	@NonNull private final String STEM_PREFIX;
 	private final int STEM_PREFIX_LENGTH;
 
 	public KanaPredictions(SettingsStore settings, TextField textField, Sequences sequences, boolean isKatakana) {
 		super(settings, textField, sequences);
 
-		SEQUENCE_PREFIX = isKatakana ? '1' : '0';
+		SEQUENCE_PREFIX = isKatakana ? "0" : "01";
 		STEM_PREFIX = isKatakana ? "Qk" : "Qh";
 		STEM_PREFIX_LENGTH = STEM_PREFIX.length();
 
diff --git a/downloads/ja-romaji.zip b/downloads/ja-romaji.zip
index fe321400..c98716fd 100644
Binary files a/downloads/ja-romaji.zip and b/downloads/ja-romaji.zip differ