diff --git a/src/add-ons/translators/png/PNGTranslator.cpp b/src/add-ons/translators/png/PNGTranslator.cpp
index 10611b1133..3c95d76fe3 100644
--- a/src/add-ons/translators/png/PNGTranslator.cpp
+++ b/src/add-ons/translators/png/PNGTranslator.cpp
@@ -36,6 +36,7 @@
 #include <stdio.h>
 #include <string.h>
 
+#include <Alert.h>
 #include <Catalog.h>
 #include <OS.h>
 #define PNG_NO_PEDANTIC_WARNINGS
@@ -299,8 +300,11 @@ void throw_error(png_structp ppng, png_const_charp error_msg)
 
 void alert_warning(png_structp ppng, png_const_charp error_msg)
 {
-	// Ignore
-	// TODO show a BAlert?
+	BAlert* alert = new BAlert("alert", error_msg,
+		B_TRANSLATE("OK"), NULL, NULL, B_WIDTH_FROM_LABEL,
+		B_WARNING_ALERT);
+	alert->SetFlags(alert->Flags() | B_CLOSE_ON_ESCAPE);
+	alert->Go();
 }
 
 status_t