diff --git a/solaris/SolarisProcessList.c b/solaris/SolarisProcessList.c
index 81ab29e6..80965f35 100644
--- a/solaris/SolarisProcessList.c
+++ b/solaris/SolarisProcessList.c
@@ -22,7 +22,7 @@ in the source distribution for its full text.
 #include <time.h>
 
 #include "CRT.h"
-#include "solaris/ProcessList.h"
+#include "solaris/Platform.h"
 #include "solaris/SolarisProcess.h"
 
 
diff --git a/solaris/SolarisProcessList.h b/solaris/SolarisProcessList.h
index 90d893c8..77bdf7b8 100644
--- a/solaris/SolarisProcessList.h
+++ b/solaris/SolarisProcessList.h
@@ -13,7 +13,12 @@ in the source distribution for its full text.
 #define GZONE "global    "
 #define UZONE "unknown   "
 
+
+#include "config.h" // IWYU pragma: keep
+
 #include <kstat.h>
+#include <stdbool.h>
+#include <stdint.h>
 #include <sys/param.h>
 #include <sys/uio.h>
 #include <sys/resource.h>
@@ -21,6 +26,12 @@ in the source distribution for its full text.
 #include <sys/sysinfo.h>
 #include <sys/swap.h>
 
+#include "Hashtable.h"
+#include "ProcessList.h"
+#include "UsersTable.h"
+
+#include "solaris/SolarisProcess.h"
+
 #include "zfs/ZfsArcStats.h"