diff --git a/libdino/src/service/database.vala b/libdino/src/service/database.vala
index 8b32c107..39dcf234 100644
--- a/libdino/src/service/database.vala
+++ b/libdino/src/service/database.vala
@@ -246,6 +246,9 @@ public class Database : Qlite.Database {
         try {
             exec("PRAGMA synchronous=0");
         } catch (Error e) { }
+        try {
+            exec("PRAGMA secure_delete=1");
+        } catch (Error e) { }
     }
 
     public override void migrate(long oldVersion) {
diff --git a/plugins/omemo/src/logic/database.vala b/plugins/omemo/src/logic/database.vala
index 6243569f..7a320696 100644
--- a/plugins/omemo/src/logic/database.vala
+++ b/plugins/omemo/src/logic/database.vala
@@ -233,6 +233,9 @@ public class Database : Qlite.Database {
         try {
             exec("PRAGMA synchronous=0");
         } catch (Error e) { }
+        try {
+            exec("PRAGMA secure_delete=1");
+        } catch (Error e) { }
     }
 
     public override void migrate(long oldVersion) {