diff --git a/src/add-ons/kernel/disk_scanner/fs/Jamfile b/src/add-ons/kernel/disk_scanner/fs/Jamfile
index ddaab09094..eebd5c8660 100644
--- a/src/add-ons/kernel/disk_scanner/fs/Jamfile
+++ b/src/add-ons/kernel/disk_scanner/fs/Jamfile
@@ -7,6 +7,6 @@ R5KernelAddon bfs : kernel disk_scanner fs :
 ;
 
 R5KernelAddon iso9660 : kernel disk_scanner fs :
-	iso9660.c
+	iso9660.cpp
 ;
 
diff --git a/src/tests/add-ons/kernel/disk_scanner/fs/Jamfile b/src/tests/add-ons/kernel/disk_scanner/fs/Jamfile
index fe8b75a4fe..0cffb70407 100644
--- a/src/tests/add-ons/kernel/disk_scanner/fs/Jamfile
+++ b/src/tests/add-ons/kernel/disk_scanner/fs/Jamfile
@@ -21,7 +21,7 @@ LinkSharedOSLibs <userland>bfs : libkernelland_emu.so ;
 # iso9660
 
 Addon <userland>iso9660 : userland disk_scanner fs :
-	iso9660.c
+	iso9660.cpp
 ;
 LinkSharedOSLibs <userland>iso9660 : libkernelland_emu.so ;