diff --git a/build/Jamfile.v2 b/build/Jamfile.v2
index 440c7d5..a371c4a 100644
--- a/build/Jamfile.v2
+++ b/build/Jamfile.v2
@@ -15,7 +15,7 @@ project boost/container
 CPP_SOURCES = alloc_lib ;
 
 lib boost_container
-   : $(CPP_SOURCES).cpp
+   : $(CPP_SOURCES).c
    : <link>shared:<define>BOOST_CONTAINER_DYN_LINK=1
      <link>static:<define>BOOST_CONTAINER_STATIC_LINK=1
    ;
diff --git a/src/alloc_lib.cpp b/src/alloc_lib.c
similarity index 100%
rename from src/alloc_lib.cpp
rename to src/alloc_lib.c