diff --git a/client/src/index.ts b/client/src/index.ts
index c2f8a1b6..8d57b546 100644
--- a/client/src/index.ts
+++ b/client/src/index.ts
@@ -97,6 +97,7 @@ function readConfig(config: any) {
 }
 
 function setupEvents() {
+
     /* Generic clicks */
     document.addEventListener("click", (ev) => {
         if (ev instanceof MouseEvent && ev.target instanceof HTMLElement) {
diff --git a/client/src/units/unit.ts b/client/src/units/unit.ts
index d54034a7..d2c70b46 100644
--- a/client/src/units/unit.ts
+++ b/client/src/units/unit.ts
@@ -511,7 +511,6 @@ export class Unit extends CustomMarker {
     }
 
     delete() {
-        // TODO: add confirmation popup
         deleteUnit(this.ID);
     }
 
diff --git a/client/src/units/unitsmanager.ts b/client/src/units/unitsmanager.ts
index 07f5ac9c..95fbb744 100644
--- a/client/src/units/unitsmanager.ts
+++ b/client/src/units/unitsmanager.ts
@@ -20,7 +20,7 @@ export class UnitsManager {
         document.addEventListener('paste', () => this.pasteUnits());
         document.addEventListener('unitSelection', (e: CustomEvent) => this.#onUnitSelection(e.detail));
         document.addEventListener('unitDeselection', (e: CustomEvent) => this.#onUnitDeselection(e.detail));
-        document.addEventListener('keydown', (event) => this.#onKeyDown(event));
+        document.addEventListener('keyup', (event) => this.#onKeyUp(event));
         document.addEventListener('deleteSelectedUnits', () => this.selectedUnitsDelete())
     }
 
@@ -426,9 +426,18 @@ export class UnitsManager {
     }
 
     /***********************************************/
-    #onKeyDown(event: KeyboardEvent) {
-        if (!keyEventWasInInput(event) && event.key === "Delete") {
-            this.selectedUnitsDelete();
+    #onKeyUp(event: KeyboardEvent) {
+        if (!keyEventWasInInput(event) && event.key === "Delete" ) {
+
+            const selectedUnits           = this.getSelectedUnits();
+            const selectionContainsAHuman = selectedUnits.some( ( unit:Unit ) => {
+                return unit.getMissionData().flags.Human === true;
+            });
+
+            if ( !selectionContainsAHuman || confirm( "Your selection includes a human player. Deleting humans causes their vehicle to crash.\n\nAre you sure you want to do this?" ) ) {
+                this.selectedUnitsDelete();
+            }
+
         }
     }