diff --git a/spm/cactus/plat/arm/fvp/fdts/cactus-secondary.dts b/spm/cactus/plat/arm/fvp/fdts/cactus-secondary.dts
index 17ace6f..717eeb9 100644
--- a/spm/cactus/plat/arm/fvp/fdts/cactus-secondary.dts
+++ b/spm/cactus/plat/arm/fvp/fdts/cactus-secondary.dts
@@ -71,21 +71,4 @@
 			attributes = <0x7>; /* read-write-execute */
 		};
 	};
-
-	device-regions {
-		compatible = "arm,ffa-manifest-device-regions";
-
-		test-reg {
-			/* Dummy values */
-			base-address = <0x00000000 0x24000000>;
-			pages-count = <16>;
-			attributes = <0x3>; /* read-write */
-			reg = <0x10000008 0x00000001 1>;
-			smmu-id = <1>;
-			stream-ids = <0x0 0x1>;
-			interrupts = <0x2 0x3>,
-					<0x4 0x5>;
-		};
-	};
-
 };
diff --git a/spm/cactus/plat/arm/fvp/fdts/cactus-tertiary.dts b/spm/cactus/plat/arm/fvp/fdts/cactus-tertiary.dts
index 88a5c3f..4802d12 100644
--- a/spm/cactus/plat/arm/fvp/fdts/cactus-tertiary.dts
+++ b/spm/cactus/plat/arm/fvp/fdts/cactus-tertiary.dts
@@ -51,21 +51,4 @@
 			attributes = <0x3>; /* read-write */
 		};
 	};
-
-	device-regions {
-		compatible = "arm,ffa-manifest-device-regions";
-
-		test-reg {
-			/* Dummy values */
-			base-address = <0x00000000 0x25000000>;
-			pages-count = <16>;
-			attributes = <0x3>; /* read-write */
-			reg = <0x10000008 0x00000001 1>;
-			smmu-id = <1>;
-			stream-ids = <0x0 0x1>;
-			interrupts = <0x2 0x3>,
-					<0x4 0x5>;
-		};
-	};
-
 };
diff --git a/spm/cactus/plat/arm/fvp/fdts/cactus.dts b/spm/cactus/plat/arm/fvp/fdts/cactus.dts
index 759adc4..94b8478 100644
--- a/spm/cactus/plat/arm/fvp/fdts/cactus.dts
+++ b/spm/cactus/plat/arm/fvp/fdts/cactus.dts
@@ -113,19 +113,5 @@
 			smmu-id = <0>;
 			stream-ids = <0x0 0x1>;
 		};
-
-		test-reg {
-			/* Dummy Values */
-			base-address = <0x00000000 0x22000000>;
-			pages-count = <64>;
-			attributes = <0x3>; /* read-write */
-			reg = <0x10000008 0x00000001 1>;
-			smmu-id = <1>;
-			stream-ids = <0x0 0x1>;
-			interrupts = <0x2 0x3>,
-					<0x4 0x5>;
-			exclusive-access;
-		};
 	};
-
 };