diff --git a/application/forms/BpConfigForm.php b/application/forms/BpConfigForm.php
index fc19160..b1847f8 100644
--- a/application/forms/BpConfigForm.php
+++ b/application/forms/BpConfigForm.php
@@ -149,10 +149,17 @@ class BpConfigForm extends BpConfigBaseForm
         $name = $this->getValue('name');
 
         if ($this->shouldBeDeleted()) {
-            $this->config->clearAppliedChanges();
-            $this->storage->deleteProcess($name);
-            $this->setSuccessUrl('businessprocess');
-            $this->redirectOnSuccess(sprintf('Process %s has been deleted', $name));
+            if ($this->config->isReferenced()) {
+                $this->addError(sprintf(
+                    $this->translate('Process "%s" cannot be deleted as it has been referenced in other processes'),
+                    $name
+                ));
+            } else {
+                $this->config->clearAppliedChanges();
+                $this->storage->deleteProcess($name);
+                $this->setSuccessUrl('businessprocess');
+                $this->redirectOnSuccess(sprintf('Process %s has been deleted', $name));
+            }
         }
     }
 
diff --git a/library/Businessprocess/BpConfig.php b/library/Businessprocess/BpConfig.php
index 1e3f119..43e8f5b 100644
--- a/library/Businessprocess/BpConfig.php
+++ b/library/Businessprocess/BpConfig.php
@@ -305,6 +305,22 @@ class BpConfig
         return $this->backend;
     }
 
+    public function isReferenced()
+    {
+        foreach ($this->storage()->listProcessNames() as $bpName) {
+            if ($bpName !== $this->getName()) {
+                $bp = $this->storage()->loadProcess($bpName);
+                foreach ($bp->getImportedNodes() as $importedNode) {
+                    if ($importedNode->getConfigName() === $this->getName()) {
+                        return true;
+                    }
+                }
+            }
+        }
+
+        return false;
+    }
+
     public function hasBackend()
     {
         return $this->backend !== null;