diff --git a/lang/m2/comp/build.lua b/lang/m2/comp/build.lua
index 95c4a30d7..4e12d24f7 100644
--- a/lang/m2/comp/build.lua
+++ b/lang/m2/comp/build.lua
@@ -113,6 +113,7 @@ cprogram {
 		"h+emheaders",
 		"modules+headers",
 		"modules/src/alloc+lib",
+		"modules/src/data+lib",
 		"modules/src/em_code+lib_k",
 		"modules/src/em_data+lib",
 		"modules/src/em_mes+lib",
diff --git a/lang/m2/comp/defmodule.c b/lang/m2/comp/defmodule.c
index a164c1939..0ecb1dd2a 100644
--- a/lang/m2/comp/defmodule.c
+++ b/lang/m2/comp/defmodule.c
@@ -17,6 +17,7 @@
 #include <em_arith.h>
 #include <em_label.h>
 #include <stdlib.h>
+#include <astring.h>
 
 #include "LLlex.h"
 #include "Lpars.h"
@@ -64,12 +65,7 @@ GetFile(name) char* name;
 	/*	Try to find a file with basename "name" and extension ".def",
 		in the directories mentioned in "DEFPATH".
 	*/
-	char buf[15];
-	char *strncpy(), *strcat();
-
-	strncpy(buf, name, 10);
-	buf[10] = '\0'; /* maximum length */
-	strcat(buf, ".def");
+	char* buf = aprintf("%s.def", name);
 	DEFPATH[0] = WorkingDir;
 	if (!InsertFile(buf, DEFPATH, &(FileName)))
 	{
diff --git a/lang/m2/libm2/Conversion.def b/lang/m2/libm2/Conversions.def
similarity index 100%
rename from lang/m2/libm2/Conversion.def
rename to lang/m2/libm2/Conversions.def
diff --git a/lang/m2/libm2/Conversion.mod b/lang/m2/libm2/Conversions.mod
similarity index 100%
rename from lang/m2/libm2/Conversion.mod
rename to lang/m2/libm2/Conversions.mod
diff --git a/lang/m2/libm2/RealConver.def b/lang/m2/libm2/RealConversions.def
similarity index 100%
rename from lang/m2/libm2/RealConver.def
rename to lang/m2/libm2/RealConversions.def
diff --git a/lang/m2/libm2/RealConver.mod b/lang/m2/libm2/RealConversions.mod
similarity index 100%
rename from lang/m2/libm2/RealConver.mod
rename to lang/m2/libm2/RealConversions.mod