diff --git a/src/librustc_back/target/windows_base.rs b/src/librustc_back/target/windows_base.rs
index 634a63cf0bb34..4eacea3fcd9a9 100644
--- a/src/librustc_back/target/windows_base.rs
+++ b/src/librustc_back/target/windows_base.rs
@@ -84,7 +84,6 @@ pub fn opts() -> TargetOptions {
             "rsend.o".to_string()
         ),
         custom_unwind_resume: true,
-        exe_allocation_crate: super::maybe_jemalloc(),
 
         .. Default::default()
     }
diff --git a/src/librustc_back/target/x86_64_rumprun_netbsd.rs b/src/librustc_back/target/x86_64_rumprun_netbsd.rs
index d63ad53cc2bb9..c97b434b9e0d1 100644
--- a/src/librustc_back/target/x86_64_rumprun_netbsd.rs
+++ b/src/librustc_back/target/x86_64_rumprun_netbsd.rs
@@ -21,6 +21,7 @@ pub fn target() -> Target {
     base.position_independent_executables = false;
     base.disable_redzone = true;
     base.no_default_libraries = false;
+    base.exe_allocation_crate = "alloc_system".to_string();
 
     Target {
         llvm_target: "x86_64-rumprun-netbsd".to_string(),