diff --git a/target/arm/gdbstub64.c b/target/arm/gdbstub64.c
index 070ba20d99..895e19f084 100644
--- a/target/arm/gdbstub64.c
+++ b/target/arm/gdbstub64.c
@@ -283,6 +283,7 @@ int arm_gen_dynamic_svereg_xml(CPUState *cs, int orig_base_reg)
     GString *s = g_string_new(NULL);
     DynamicGDBXMLInfo *info = &cpu->dyn_svereg_xml;
     int reg_width = cpu->sve_max_vq * 128;
+    int pred_width = cpu->sve_max_vq * 16;
     int base_reg = orig_base_reg;
     int i;
 
@@ -319,13 +320,13 @@ int arm_gen_dynamic_svereg_xml(CPUState *cs, int orig_base_reg)
         g_string_append_printf(s,
                                "<reg name=\"p%d\" bitsize=\"%d\""
                                " regnum=\"%d\" type=\"svep\"/>",
-                               i, cpu->sve_max_vq * 16, base_reg++);
+                               i, pred_width, base_reg++);
     }
     g_string_append_printf(s,
                            "<reg name=\"ffr\" bitsize=\"%d\""
                            " regnum=\"%d\" group=\"vector\""
                            " type=\"svep\"/>",
-                           cpu->sve_max_vq * 16, base_reg++);
+                           pred_width, base_reg++);
 
     /* Define the vector length pseudo-register. */
     g_string_append_printf(s,