diff --git a/app/src/main/java/com/keylesspalace/tusky/ComposeActivity.java b/app/src/main/java/com/keylesspalace/tusky/ComposeActivity.java
index 2f61cdb24..c6b76523c 100644
--- a/app/src/main/java/com/keylesspalace/tusky/ComposeActivity.java
+++ b/app/src/main/java/com/keylesspalace/tusky/ComposeActivity.java
@@ -101,6 +101,7 @@ public class ComposeActivity extends BaseActivity {
     private boolean statusMarkSensitive; // to the status being composed.
     private boolean statusHideText;      //
     private View contentWarningBar;
+    private boolean statusAlreadyInFlight; // to prevent duplicate sends by mashing the send button
 
     private static class QueuedMedia {
         enum Type {
@@ -370,12 +371,17 @@ public class ComposeActivity extends BaseActivity {
         final EditText contentWarningEditor = (EditText) findViewById(R.id.field_content_warning);
         showContentWarning(false);
 
+        statusAlreadyInFlight = false;
         final Button sendButton = (Button) findViewById(R.id.button_send);
         sendButton.setOnClickListener(new View.OnClickListener() {
             @Override
             public void onClick(View v) {
+                if (statusAlreadyInFlight) {
+                    return;
+                }
                 Editable editable = textEditor.getText();
                 if (editable.length() <= STATUS_CHARACTER_LIMIT) {
+                    statusAlreadyInFlight = true;
                     String spoilerText = "";
                     if (statusHideText) {
                         spoilerText = contentWarningEditor.getText().toString();
@@ -524,6 +530,7 @@ public class ComposeActivity extends BaseActivity {
 
     private void onSendFailure() {
         textEditor.setError(getString(R.string.error_sending_status));
+        statusAlreadyInFlight = false;
     }
 
     private void readyStatus(final String content, final String visibility, final boolean sensitive,
@@ -557,6 +564,7 @@ public class ComposeActivity extends BaseActivity {
                     @Override
                     protected void onCancelled() {
                         removeAllMediaFromQueue();
+                        statusAlreadyInFlight = false;
                         super.onCancelled();
                     }
                 };
@@ -581,6 +589,7 @@ public class ComposeActivity extends BaseActivity {
                         readyStatus(content, visibility, sensitive, spoilerText);
                     }
                 });
+        statusAlreadyInFlight = false;
     }
 
     private void onMediaPick() {
diff --git a/app/src/main/java/com/keylesspalace/tusky/ReportActivity.java b/app/src/main/java/com/keylesspalace/tusky/ReportActivity.java
index 35c71bf24..fb0a8ccdc 100644
--- a/app/src/main/java/com/keylesspalace/tusky/ReportActivity.java
+++ b/app/src/main/java/com/keylesspalace/tusky/ReportActivity.java
@@ -55,6 +55,7 @@ public class ReportActivity extends BaseActivity {
     private String accessToken;
     private View anyView; // what Snackbar will use to find the root view
     private ReportAdapter adapter;
+    private boolean reportAlreadyInFlight;
 
     @Override
     protected void onCreate(@Nullable Bundle savedInstanceState) {
@@ -102,11 +103,16 @@ public class ReportActivity extends BaseActivity {
 
         final EditText comment = (EditText) findViewById(R.id.report_comment);
         Button send = (Button) findViewById(R.id.report_send);
+        reportAlreadyInFlight = false;
         send.setOnClickListener(new View.OnClickListener() {
             @Override
             public void onClick(View v) {
+                if (reportAlreadyInFlight) {
+                    return;
+                }
                 String[] statusIds = adapter.getCheckedStatusIds();
                 if (statusIds.length > 0) {
+                    reportAlreadyInFlight = true;
                     sendReport(accountId, statusIds, comment.getText().toString());
                 } else {
                     comment.setError(getString(R.string.error_report_too_few_statuses));
@@ -187,6 +193,7 @@ public class ReportActivity extends BaseActivity {
                     }
                 })
                 .show();
+        reportAlreadyInFlight = false;
     }
 
     private void fetchRecentStatuses(String accountId) {