diff --git a/rust/config/arm64_device.go b/rust/config/arm64_device.go
index 6c021c7..9850570 100644
--- a/rust/config/arm64_device.go
+++ b/rust/config/arm64_device.go
@@ -54,7 +54,7 @@
 			strings.Join(rustFlags, " "))
 	}
 
-	ExportedVars.ExportStringListStaticVariable("DEVICE_ARM64_RUSTC_FLAGS", Arm64RustFlags)
+	pctx.StaticVariable("DEVICE_ARM64_RUSTC_FLAGS", strings.Join(Arm64RustFlags, " "))
 }
 
 type toolchainArm64 struct {
diff --git a/rust/config/arm_device.go b/rust/config/arm_device.go
index a5f4afb..5394e8a 100644
--- a/rust/config/arm_device.go
+++ b/rust/config/arm_device.go
@@ -44,7 +44,7 @@
 			strings.Join(rustFlags, " "))
 	}
 
-	ExportedVars.ExportStringListStaticVariable("DEVICE_ARM_RUSTC_FLAGS", ArmRustFlags)
+	pctx.StaticVariable("DEVICE_ARM_RUSTC_FLAGS", strings.Join(ArmRustFlags, " "))
 }
 
 type toolchainArm struct {
diff --git a/rust/config/global.go b/rust/config/global.go
index e28dbaa..2323049 100644
--- a/rust/config/global.go
+++ b/rust/config/global.go
@@ -22,8 +22,7 @@
 )
 
 var (
-	pctx         = android.NewPackageContext("android/soong/rust/config")
-	ExportedVars = android.NewExportedVariables(pctx)
+	pctx = android.NewPackageContext("android/soong/rust/config")
 
 	RustDefaultVersion = "1.76.0"
 	RustDefaultBase    = "prebuilts/rust/"
@@ -112,17 +111,17 @@
 
 	pctx.StaticVariable("DeviceGlobalLinkFlags", strings.Join(deviceGlobalLinkFlags, " "))
 
-	ExportedVars.ExportStringStaticVariable("RUST_DEFAULT_VERSION", RustDefaultVersion)
-	ExportedVars.ExportStringListStaticVariable("GLOBAL_RUSTC_FLAGS", GlobalRustFlags)
-	ExportedVars.ExportStringListStaticVariable("LINUX_HOST_GLOBAL_LINK_FLAGS", LinuxHostGlobalLinkFlags)
+	pctx.StaticVariable("RUST_DEFAULT_VERSION", RustDefaultVersion)
+	pctx.StaticVariable("GLOBAL_RUSTC_FLAGS", strings.Join(GlobalRustFlags, " "))
+	pctx.StaticVariable("LINUX_HOST_GLOBAL_LINK_FLAGS", strings.Join(LinuxHostGlobalLinkFlags, " "))
 
-	ExportedVars.ExportStringListStaticVariable("DEVICE_GLOBAL_RUSTC_FLAGS", deviceGlobalRustFlags)
-	ExportedVars.ExportStringListStaticVariable("DEVICE_GLOBAL_LINK_FLAGS",
-		android.RemoveListFromList(deviceGlobalLinkFlags, []string{
+	pctx.StaticVariable("DEVICE_GLOBAL_RUSTC_FLAGS", strings.Join(deviceGlobalRustFlags, " "))
+	pctx.StaticVariable("DEVICE_GLOBAL_LINK_FLAGS",
+		strings.Join(android.RemoveListFromList(deviceGlobalLinkFlags, []string{
 			// The cc_config flags are retrieved from cc_toolchain by rust rules.
 			"${cc_config.DeviceGlobalLldflags}",
 			"-B${cc_config.ClangBin}",
-		}))
+		}), " "))
 }
 
 func HostPrebuiltTag(config android.Config) string {
diff --git a/rust/config/x86_64_device.go b/rust/config/x86_64_device.go
index 49f7c77..fee1923 100644
--- a/rust/config/x86_64_device.go
+++ b/rust/config/x86_64_device.go
@@ -54,7 +54,7 @@
 		pctx.StaticVariable("X86_64"+variant+"VariantRustFlags",
 			strings.Join(rustFlags, " "))
 	}
-	ExportedVars.ExportStringListStaticVariable("DEVICE_X86_64_RUSTC_FLAGS", x86_64RustFlags)
+	pctx.StaticVariable("DEVICE_X86_64_RUSTC_FLAGS", strings.Join(x86_64RustFlags, " "))
 }
 
 type toolchainX86_64 struct {
diff --git a/rust/config/x86_device.go b/rust/config/x86_device.go
index 2a57e73..5d9d88a 100644
--- a/rust/config/x86_device.go
+++ b/rust/config/x86_device.go
@@ -56,7 +56,7 @@
 			strings.Join(rustFlags, " "))
 	}
 
-	ExportedVars.ExportStringListStaticVariable("DEVICE_X86_RUSTC_FLAGS", x86RustFlags)
+	pctx.StaticVariable("DEVICE_X86_RUSTC_FLAGS", strings.Join(x86RustFlags, " "))
 }
 
 type toolchainX86 struct {