diff --git a/sink/Makefile b/sink/Makefile
index e2044e2..340f543 100644
--- a/sink/Makefile
+++ b/sink/Makefile
@@ -1,15 +1,14 @@
 BUILD_DIR = build
 
 C_SOURCES = \
-../cube/User/Src/sha256.c \
+sha256.c \
 sink20169.c \
 logging.c
 
 
 C_INCLUDES = \
 -I. \
--I../cube/User/Inc \
--I/usr/include/postgresql
+-I/usr/local/include/postgresql
 
 VERSION := $(shell git rev-parse --short=8 HEAD)
 
diff --git a/sink/sink20169.c b/sink/sink20169.c
index fecb4ea..eabe84a 100644
--- a/sink/sink20169.c
+++ b/sink/sink20169.c
@@ -388,7 +388,13 @@ int sendToDB(t_forwarderHandle *handle, const char *location, const char *device
         char stmt[256];
         int res1 = snprintf(stmt, sizeof(stmt),
                             "INSERT INTO mainsfrequency (time, host, location, freq) "
-                            "VALUES(to_timestamp(%lu), '%s', '%s', %d.%03d)",
+                            "VALUES(to_timestamp("
+#ifdef OpenBSD
+                                                 "%llu"
+#else
+                                                 "%lu"
+#endif                                                      
+                                                       "), '%s', '%s', %d.%03d)",
                             timestamp, deviceId, location, 
                             frequency_before_point, frequency_behind_point);
         if (res1 > sizeof(stmt)) {