diff --git a/lang/cem/libcc.ansi/build.lua b/lang/cem/libcc.ansi/build.lua
index ca5c9c570..3ca95b629 100644
--- a/lang/cem/libcc.ansi/build.lua
+++ b/lang/cem/libcc.ansi/build.lua
@@ -38,6 +38,7 @@ for _, plat in ipairs(vars.plats) do
 			"./locale/*.c",
 			"./malloc/*.c",
 			"./math/*.c",
+			"./math/*.e",
 			"./misc/environ.c", -- don't build everything here as it's all obsolete
 			"./setjmp/*.c",
 			"./setjmp/*.e",
diff --git a/mach/m68020/libem/build.lua b/mach/m68020/libem/build.lua
index ca5a13c65..d17adcd92 100644
--- a/mach/m68020/libem/build.lua
+++ b/mach/m68020/libem/build.lua
@@ -1,8 +1,14 @@
 for _, plat in ipairs(vars.plats) do
 	acklibrary {
 		name = "lib_"..plat,
-		srcs = { "./*.s" },
+		srcs = {
+			"./*.s",
+			"./*.c"
+		},
 		vars = { plat = plat },
+		deps = {
+			"h+emheaders"
+		}
 	}
 end