diff --git a/src/core/execute.h b/src/core/execute.h
index 5143fcaa589..bd3db0b6332 100644
--- a/src/core/execute.h
+++ b/src/core/execute.h
@@ -38,8 +38,6 @@ typedef struct ExecRuntime ExecRuntime;
 #include "util.h"
 #include "fdset.h"
 
-typedef struct Unit Unit;
-
 typedef enum ExecInput {
         EXEC_INPUT_NULL,
         EXEC_INPUT_TTY,