diff --git a/Applications/Taskbar/main.cpp b/Applications/Taskbar/main.cpp
index afdee7ed9e7..ffbe5c04132 100644
--- a/Applications/Taskbar/main.cpp
+++ b/Applications/Taskbar/main.cpp
@@ -28,6 +28,7 @@
 #include <LibGUI/GApplication.h>
 #include <signal.h>
 #include <stdio.h>
+#include <sys/wait.h>
 
 int main(int argc, char** argv)
 {
diff --git a/Libraries/LibC/stdio.cpp b/Libraries/LibC/stdio.cpp
index e57f9b8245a..5878be269f1 100644
--- a/Libraries/LibC/stdio.cpp
+++ b/Libraries/LibC/stdio.cpp
@@ -37,6 +37,7 @@
 #include <stdlib.h>
 #include <string.h>
 #include <sys/types.h>
+#include <sys/wait.h>
 #include <unistd.h>
 
 extern "C" {
diff --git a/Libraries/LibC/sys/wait.cpp b/Libraries/LibC/sys/wait.cpp
index d73d11847e3..3119a914272 100644
--- a/Libraries/LibC/sys/wait.cpp
+++ b/Libraries/LibC/sys/wait.cpp
@@ -24,6 +24,7 @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
+#include <Kernel/Syscall.h>
 #include <assert.h>
 #include <sys/wait.h>
 #include <unistd.h>
@@ -35,3 +36,9 @@ pid_t wait(int* wstatus)
     return waitpid(-1, wstatus, 0);
 }
 }
+
+pid_t waitpid(pid_t waitee, int* wstatus, int options)
+{
+    int rc = syscall(SC_waitpid, waitee, wstatus, options);
+    __RETURN_WITH_ERRNO(rc, rc, -1);
+}
diff --git a/Libraries/LibC/sys/wait.h b/Libraries/LibC/sys/wait.h
index 71b03c84305..2a2fc162a18 100644
--- a/Libraries/LibC/sys/wait.h
+++ b/Libraries/LibC/sys/wait.h
@@ -44,6 +44,7 @@ __BEGIN_DECLS
 #define WEXITED 4
 #define WCONTINUED 8
 
+pid_t waitpid(pid_t, int* wstatus, int options);
 pid_t wait(int* wstatus);
 
 __END_DECLS
diff --git a/Libraries/LibC/unistd.cpp b/Libraries/LibC/unistd.cpp
index db2434c7f49..df6349111ed 100644
--- a/Libraries/LibC/unistd.cpp
+++ b/Libraries/LibC/unistd.cpp
@@ -272,12 +272,6 @@ int close(int fd)
     __RETURN_WITH_ERRNO(rc, rc, -1);
 }
 
-pid_t waitpid(pid_t waitee, int* wstatus, int options)
-{
-    int rc = syscall(SC_waitpid, waitee, wstatus, options);
-    __RETURN_WITH_ERRNO(rc, rc, -1);
-}
-
 int lstat(const char* path, struct stat* statbuf)
 {
     if (!path) {
diff --git a/Libraries/LibC/unistd.h b/Libraries/LibC/unistd.h
index 935392c01c5..6d1d0c89f5c 100644
--- a/Libraries/LibC/unistd.h
+++ b/Libraries/LibC/unistd.h
@@ -101,8 +101,6 @@ int tcsetpgrp(int fd, pid_t pgid);
 ssize_t read(int fd, void* buf, size_t count);
 ssize_t write(int fd, const void* buf, size_t count);
 int close(int fd);
-pid_t waitpid(pid_t, int* wstatus, int options);
-pid_t wait(int* wstatus);
 int chdir(const char* path);
 int fchdir(int fd);
 char* getcwd(char* buffer, size_t size);