diff --git a/app/src/main/java/com/keylesspalace/tusky/ComposeActivity.java b/app/src/main/java/com/keylesspalace/tusky/ComposeActivity.java
index 3fa42f995..b05a0915f 100644
--- a/app/src/main/java/com/keylesspalace/tusky/ComposeActivity.java
+++ b/app/src/main/java/com/keylesspalace/tusky/ComposeActivity.java
@@ -785,7 +785,7 @@ public class  ComposeActivity extends BaseActivity implements ComposeOptionsFrag
         ViewGroup.LayoutParams layoutParams = new ViewGroup.LayoutParams(
                 ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT);
         editText.setLayoutParams(layoutParams);
-        editText.setInputType(InputType.TYPE_CLASS_TEXT | InputType.TYPE_TEXT_FLAG_MULTI_LINE);
+        editText.setInputType(InputType.TYPE_CLASS_TEXT | InputType.TYPE_TEXT_FLAG_MULTI_LINE | InputType.TYPE_TEXT_FLAG_CAP_SENTENCES);
         editText.setEms(10);
         editText.setBackgroundColor(0);
         editText.setGravity(Gravity.START | Gravity.TOP);