diff --git a/lib/extensions/mpam/mpam.c b/lib/extensions/mpam/mpam.c
index 0166707..e794f01 100644
--- a/lib/extensions/mpam/mpam.c
+++ b/lib/extensions/mpam/mpam.c
@@ -31,11 +31,19 @@
 	/*
 	 * If EL2 is implemented but unused, disable trapping to EL2 when lower
 	 * ELs access their own MPAM registers.
+	 * If EL2 is implemented and used, enable trapping to EL2.
 	 */
 	if (el2_unused) {
 		write_mpam2_el2(0);
 
 		if ((read_mpamidr_el1() & MPAMIDR_HAS_HCR_BIT) != 0U)
 			write_mpamhcr_el2(0);
+	} else {
+		write_mpam2_el2(MPAM2_EL2_TRAPMPAM0EL1 |
+				MPAM2_EL2_TRAPMPAM1EL1);
+
+		if ((read_mpamidr_el1() & MPAMIDR_HAS_HCR_BIT) != 0U) {
+			write_mpamhcr_el2(MPAMHCR_EL2_TRAP_MPAMIDR_EL1);
+		}
 	}
 }