1 files changed, 6 insertions, 0 deletions
diff --git a/src/main.c b/src/main.c
index 2a9ce00..807f57c 100644
--- a/src/main.c
+++ b/src/main.c
@@ -22,6 +22,7 @@
 #include "input.h"
 #include "log.h"
 #include "nelem.h"
+#include "lock.h"
 #include "shm.h"
 #include "string_vec.h"
 #include "string_vec.h"
@@ -905,6 +906,11 @@ int main(int argc, char *argv[])
 
 	parse_args(&tofi, argc, argv);
 
+	if (lock_check()) {
+		log_error("Another instance of tofi is already running.\n");
+		exit(EXIT_FAILURE);
+	}
+
 	/*
 	 * Initial Wayland & XKB setup.
 	 * The first thing to do is connect a listener to the global registry,