diff --git a/src/parser.cpp b/src/parser.cpp
index ce5da0c9e..d1b9a99dd 100644
--- a/src/parser.cpp
+++ b/src/parser.cpp
@@ -566,7 +566,7 @@ job_t *parser_t::job_get(job_id_t id) {
     return NULL;
 }
 
-job_t *parser_t::job_get_from_pid(int pid) {
+job_t *parser_t::job_get_from_pid(pid_t pid) {
     job_iterator_t jobs;
     job_t *job;
     while ((job = jobs.next())) {
diff --git a/src/parser.h b/src/parser.h
index 7df2fdc52..a02fbc17f 100644
--- a/src/parser.h
+++ b/src/parser.h
@@ -319,7 +319,7 @@ class parser_t {
     job_t *job_get(job_id_t job_id);
 
     /// Returns the job with the given pid.
-    job_t *job_get_from_pid(int pid);
+    job_t *job_get_from_pid(pid_t pid);
 
     /// Returns a new profile item if profiling is active. The caller should fill it in. The
     /// parser_t will clean it up.