diff --git a/plat/common/plat_gicv2.c b/plat/common/plat_gicv2.c
index 2b61834..4b66873 100644
--- a/plat/common/plat_gicv2.c
+++ b/plat/common/plat_gicv2.c
@@ -226,7 +226,7 @@
 		gicv2_type = GICV2_INTR_GROUP1;
 		break;
 	default:
-		assert(false);
+		assert(0); /* Unreachable */
 		break;
 	}
 
@@ -266,7 +266,7 @@
 		proc_num = -1;
 		break;
 	default:
-		assert(false);
+		assert(0); /* Unreachable */
 		break;
 	}
 
diff --git a/plat/common/plat_gicv3.c b/plat/common/plat_gicv3.c
index e43a355..f8277fe 100644
--- a/plat/common/plat_gicv3.c
+++ b/plat/common/plat_gicv3.c
@@ -157,6 +157,7 @@
 			return __builtin_ctz(SCR_IRQ_BIT);
 		else
 			return __builtin_ctz(SCR_FIQ_BIT);
+		assert(0); /* Unreachable */
 	case INTR_TYPE_NS:
 		/*
 		 * The Non secure interrupts will be signaled as FIQ in S-EL0/1
@@ -166,6 +167,7 @@
 			return __builtin_ctz(SCR_FIQ_BIT);
 		else
 			return __builtin_ctz(SCR_IRQ_BIT);
+		assert(0); /* Unreachable */
 	case INTR_TYPE_EL3:
 		/*
 		 * The EL3 interrupts are signaled as FIQ in both S-EL0/1 and
@@ -255,7 +257,7 @@
 		irm = GICV3_IRM_ANY;
 		break;
 	default:
-		assert(false);
+		assert(0); /* Unreachable */
 		break;
 	}