2 files changed, 3 insertions, 3 deletions

diff --git a/crates/ra_prof/src/lib.rs b/crates/ra_prof/src/lib.rs
index e5385f51b..845b2221c 100644
--- a/crates/ra_prof/src/lib.rs
+++ b/crates/ra_prof/src/lib.rs
@@ -24,7 +24,7 @@ pub use crate::memory_usage::{Bytes, MemoryUsage};
 
 // We use jemalloc mainly to get heap usage statistics, actual performance
 // difference is not measures.
-#[cfg(feature = "jemalloc")]
+#[cfg(all(feature = "jemalloc", not(target_env = "msvc")))]
 #[global_allocator]
 static ALLOC: jemallocator::Jemalloc = jemallocator::Jemalloc;
 
diff --git a/crates/ra_prof/src/memory_usage.rs b/crates/ra_prof/src/memory_usage.rs
index ad005ea14..9768f656c 100644
--- a/crates/ra_prof/src/memory_usage.rs
+++ b/crates/ra_prof/src/memory_usage.rs
@@ -8,7 +8,7 @@ pub struct MemoryUsage {
 }
 
 impl MemoryUsage {
-    #[cfg(feature = "jemalloc")]
+    #[cfg(all(feature = "jemalloc", not(target_env = "msvc")))]
     pub fn current() -> MemoryUsage {
         jemalloc_ctl::epoch::advance().unwrap();
         MemoryUsage {
@@ -17,7 +17,7 @@ impl MemoryUsage {
         }
     }
 
-    #[cfg(not(feature = "jemalloc"))]
+    #[cfg(any(not(feature = "jemalloc"), target_env = "msvc"))]
     pub fn current() -> MemoryUsage {
         MemoryUsage { allocated: Bytes(0), resident: Bytes(0) }
     }