diff --git a/provider/oci/environ.go b/provider/oci/environ.go
index 9d62f9b745e..933dc93348f 100644
--- a/provider/oci/environ.go
+++ b/provider/oci/environ.go
@@ -678,7 +678,7 @@ func ensureShapeConfig(
 		// VM.Standard.A1.Flex, if we set 2 Ocpus OCI will set 12GB of
 		// memory (default is 6GB per core).
 		if constraints.HasMem() {
-			mem := float32(*constraints.Mem)
+			mem := float32(*constraints.Mem / 1024)
 			instanceDetails.ShapeConfig.MemoryInGBs = &mem
 		}
 	}
diff --git a/provider/oci/environ_test.go b/provider/oci/environ_test.go
index bde27aa20f0..6f0b3f3fe3a 100644
--- a/provider/oci/environ_test.go
+++ b/provider/oci/environ_test.go
@@ -78,7 +78,7 @@ func (s *environSuite) TestEnsureShapeConfig(c *gc.C) {
 			maxMem:      makeUint64Pointer(512 * 1024),
 			cpuCores:    1,
 			mem:         1024,
-			constraints: "mem=64",
+			constraints: "mem=64G",
 			want: &ociCore.LaunchInstanceShapeConfigDetails{
 				Ocpus:       makeFloat32Pointer(float32(instances.MinCpuCores)),
 				MemoryInGBs: makeFloat32Pointer(64),
@@ -90,7 +90,7 @@ func (s *environSuite) TestEnsureShapeConfig(c *gc.C) {
 			maxMem:      makeUint64Pointer(512 * 1024),
 			cpuCores:    1,
 			mem:         1024,
-			constraints: "cores=31 mem=64",
+			constraints: "cores=31 mem=64G",
 			want: &ociCore.LaunchInstanceShapeConfigDetails{
 				Ocpus:       makeFloat32Pointer(31),
 				MemoryInGBs: makeFloat32Pointer(64),
diff --git a/provider/oci/images.go b/provider/oci/images.go
index e89c1d8723e..a36fc5d2b4a 100644
--- a/provider/oci/images.go
+++ b/provider/oci/images.go
@@ -334,17 +334,13 @@ func instanceTypes(cli ComputeClient, compartmentID, imageID *string) ([]instanc
 		// OcpuOptions will not be nil and they  indicate the maximum
 		// and minimum values. We assign the max memory and cpu cores
 		// values to the instance type in that case.
-		if val.MemoryOptions != nil {
-			if val.MemoryOptions.MaxInGBs != nil {
-				maxMem := uint64(*val.MemoryOptions.MaxInGBs) * 1024
-				newType.MaxMem = &maxMem
-			}
+		if val.MemoryOptions != nil && val.MemoryOptions.MaxInGBs != nil {
+			maxMem := uint64(*val.MemoryOptions.MaxInGBs) * 1024
+			newType.MaxMem = &maxMem
 		}
-		if val.OcpuOptions != nil {
-			if val.OcpuOptions.Max != nil {
-				maxCpuCores := uint64(*val.OcpuOptions.Max)
-				newType.MaxCpuCores = &maxCpuCores
-			}
+		if val.OcpuOptions != nil && val.OcpuOptions.Max != nil {
+			maxCpuCores := uint64(*val.OcpuOptions.Max)
+			newType.MaxCpuCores = &maxCpuCores
 		}
 		types = append(types, newType)
 	}