diff --git a/target/i386/sev.c b/target/i386/sev.c
index 0ffdf8952c..3ab8b3c28b 100644
--- a/target/i386/sev.c
+++ b/target/i386/sev.c
@@ -934,8 +934,9 @@ sev_snp_launch_update(SevSnpGuestState *sev_snp_guest,
 
 out:
     if (!ret && update.gfn_start << TARGET_PAGE_BITS != data->gpa + data->len) {
-        error_report("SEV-SNP: expected update of GPA range %lx-%lx,"
-                     "got GPA range %lx-%llx",
+        error_report("SEV-SNP: expected update of GPA range %"
+                     HWADDR_PRIx "-%" HWADDR_PRIx ","
+                     "got GPA range %" HWADDR_PRIx "-%llx",
                      data->gpa, data->gpa + data->len, data->gpa,
                      update.gfn_start << TARGET_PAGE_BITS);
         ret = -EIO;
@@ -2148,7 +2149,8 @@ sev_snp_guest_set_guest_visible_workarounds(Object *obj, const char *value,
     }
 
     if (len != sizeof(start->gosvw)) {
-        error_setg(errp, "parameter length of %lu exceeds max of %lu",
+        error_setg(errp, "parameter length of %" G_GSIZE_FORMAT
+                   " exceeds max of %zu",
                    len, sizeof(start->gosvw));
         return;
     }
@@ -2185,7 +2187,8 @@ sev_snp_guest_set_id_block(Object *obj, const char *value, Error **errp)
     }
 
     if (len != KVM_SEV_SNP_ID_BLOCK_SIZE) {
-        error_setg(errp, "parameter length of %lu not equal to %u",
+        error_setg(errp, "parameter length of %" G_GSIZE_FORMAT
+                   " not equal to %u",
                    len, KVM_SEV_SNP_ID_BLOCK_SIZE);
         return;
     }
@@ -2223,7 +2226,8 @@ sev_snp_guest_set_id_auth(Object *obj, const char *value, Error **errp)
     }
 
     if (len > KVM_SEV_SNP_ID_AUTH_SIZE) {
-        error_setg(errp, "parameter length:ID_AUTH %lu exceeds max of %u",
+        error_setg(errp, "parameter length:ID_AUTH %" G_GSIZE_FORMAT
+                   " exceeds max of %u",
                    len, KVM_SEV_SNP_ID_AUTH_SIZE);
         return;
     }
@@ -2291,7 +2295,8 @@ sev_snp_guest_set_host_data(Object *obj, const char *value, Error **errp)
     }
 
     if (len != sizeof(finish->host_data)) {
-        error_setg(errp, "parameter length of %lu not equal to %lu",
+        error_setg(errp, "parameter length of %" G_GSIZE_FORMAT
+                   " not equal to %zu",
                    len, sizeof(finish->host_data));
         return;
     }