diff --git a/netbsd/NetBSDProcess.c b/netbsd/NetBSDProcess.c
index f80db5bd..8d2b4c40 100644
--- a/netbsd/NetBSDProcess.c
+++ b/netbsd/NetBSDProcess.c
@@ -211,7 +211,7 @@ const ProcessFieldData Process_fields[LAST_PROCESSFIELD] = {
 };
 
 Process* NetBSDProcess_new(const Settings* settings) {
-   NetBSDProcess* this = xCalloc(sizeof(NetBSDProcess), 1);
+   NetBSDProcess* this = xCalloc(1, sizeof(NetBSDProcess));
    Object_setClass(this, Class(NetBSDProcess));
    Process_init(&this->super, settings);
    return &this->super;
diff --git a/openbsd/OpenBSDProcess.c b/openbsd/OpenBSDProcess.c
index fe9018d2..ac3def3a 100644
--- a/openbsd/OpenBSDProcess.c
+++ b/openbsd/OpenBSDProcess.c
@@ -203,7 +203,7 @@ const ProcessFieldData Process_fields[LAST_PROCESSFIELD] = {
 };
 
 Process* OpenBSDProcess_new(const Settings* settings) {
-   OpenBSDProcess* this = xCalloc(sizeof(OpenBSDProcess), 1);
+   OpenBSDProcess* this = xCalloc(1, sizeof(OpenBSDProcess));
    Object_setClass(this, Class(OpenBSDProcess));
    Process_init(&this->super, settings);
    return &this->super;