diff --git a/src/odoors/GNUmakefile b/src/odoors/GNUmakefile
index edfba62502be007403c903147c099c65a1324089..4739ffce6c16544b323a9e2edb7fa2b55268a183 100644
--- a/src/odoors/GNUmakefile
+++ b/src/odoors/GNUmakefile
@@ -162,5 +162,11 @@ ex_diag: ex_diag.c ${LIBDIR}libODoors${SHLIB}
 ex_hello: ex_hello.c ${LIBDIR}libODoors${SHLIB}
 	$(CC) $(CFLAGS) ex_hello.c -o ex_hello -lODoors
 
+ex_music: ex_music.c ${LIBDIR}libODoors${SHLIB}
+	$(CC) $(CFLAGS) ex_music.c -o ex_music -lODoors
+
+ex_ski: ex_ski.c ${LIBDIR}libODoors${SHLIB}
+	$(CC) $(CFLAGS) ex_ski.c -o ex_ski -lODoors
+
 #
 #------------------------------------------------------------------------------
diff --git a/src/odoors/ex_music.c b/src/odoors/ex_music.c
index 637a966f6da37d3ffed4f4eeff2a296fbe1e6808..40161818969e86ba8272e9bf34bd111439bb2ca8 100644
--- a/src/odoors/ex_music.c
+++ b/src/odoors/ex_music.c
@@ -12,7 +12,7 @@
 
 
 /* The opendoor.h file must be included by any program using OpenDoors. */
-#include "opendoor.h"
+#include "OpenDoor.h"
 
 #include <string.h>
 
diff --git a/src/odoors/ex_ski.c b/src/odoors/ex_ski.c
index 25123f95dba1cf52fbc7f0e09354912fc8a96947..784347a63a3039d2a10622dfbd52eac0f294d8fa 100644
--- a/src/odoors/ex_ski.c
+++ b/src/odoors/ex_ski.c
@@ -26,6 +26,7 @@
 #include <time.h>
 #include <errno.h>
 #include <stdlib.h>
+#include <genwrap.h>
 
 
 /* Hard-coded configurable constants - change these values to alter game */