diff --git a/src/Makefile b/src/Makefile
index 0b999fc..ad67c81 100644
--- a/src/Makefile
+++ b/src/Makefile
@@ -18,7 +18,7 @@ endif
 SHARED_CFLAGS += -fPIC -fvisibility=hidden -DSHARED
 
 CFLAGS ?= -g -O2 -Werror -Wall
-ALL_CFLAGS += $(CFLAGS)
+ALL_CFLAGS += $(CFLAGS) -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64
 ALL_LDFLAGS += $(LDFLAGS)
 ifdef NO_PKG_CONFIG
 	ALL_LDFLAGS += -lelf