diff --git a/rebar.config b/rebar.config
index 26684ed..eb87d09 100644
--- a/rebar.config
+++ b/rebar.config
@@ -1,5 +1,5 @@
 % -*- mode: erlang -*-
-{port_envs, [{"^(?!.*win32)", "DRV_CFLAGS", "$DRV_CFLAGS -Wall -Wextra -Wno-unused-parameter"},
+{port_envs, [{"^(?!.*win32)", "DRV_CFLAGS", "$DRV_CFLAGS -Wall -Wextra -Wno-unused-parameter -Wstrict-prototypes"},
              {"^(?!.*win32)", "DRV_LDFLAGS", "$DRV_LDFLAGS -lsqlite3"},
              {"win32", "CFLAGS", "/IF:/MyProgramming/sqlite-amalgamation /Ic_src /W4 /wd4100 /wd4204"},
              {"win32", "LDFLAGS", "sqlite3.lib"}]}.