diff --git a/src/core/load-fragment.c b/src/core/load-fragment.c
index 52a10dd24b..e52f608db7 100644
--- a/src/core/load-fragment.c
+++ b/src/core/load-fragment.c
@@ -831,7 +831,6 @@ int config_parse_socket_bindtodevice(
         return 0;
 }
 
-DEFINE_CONFIG_PARSE_ENUM(config_parse_input, exec_input, ExecInput, "Failed to parse input literal specifier");
 DEFINE_CONFIG_PARSE_ENUM(config_parse_output, exec_output, ExecOutput, "Failed to parse output literal specifier");
 
 int config_parse_exec_input(const char *unit,
diff --git a/src/core/load-fragment.h b/src/core/load-fragment.h
index fbf2de23eb..58d335807b 100644
--- a/src/core/load-fragment.h
+++ b/src/core/load-fragment.h
@@ -48,7 +48,6 @@ int config_parse_socket_bindtodevice(const char *unit, const char *filename, uns
 int config_parse_exec_output(const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata);
 int config_parse_output(const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata);
 int config_parse_exec_input(const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata);
-int config_parse_input(const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata);
 int config_parse_exec_io_class(const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata);
 int config_parse_exec_io_priority(const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata);
 int config_parse_exec_cpu_sched_policy(const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata);