--- a/config/rules.mk
+++ b/config/rules.mk
@@ -937,17 +937,17 @@ endif
 # choices, and Cargo only supports two, we choose to enable various
 # optimization levels in our Cargo.toml files all the time, and override the
 # optimization level here, if necessary.  (The Cargo.toml files already
 # specify debug-assertions appropriately for --{disable,enable}-debug.)
 ifndef MOZ_OPTIMIZE
 rustflags_override = RUSTFLAGS='-C opt-level=0'
 endif
 
-CARGO_BUILD = env $(rustflags_override) CARGO_TARGET_DIR=. RUSTC=$(RUSTC) MOZ_DIST=$(DIST) $(CARGO) build $(cargo_build_flags)
+CARGO_BUILD = env $(rustflags_override) CARGO_TARGET_DIR=. RUSTC=$(RUSTC) MOZ_DIST=$(ABS_DIST) $(CARGO) build $(cargo_build_flags)
 
 ifdef RUST_LIBRARY_FILE
 
 ifdef RUST_LIBRARY_FEATURES
 rust_features_flag := --features "$(RUST_LIBRARY_FEATURES)"
 endif
 
 # Assume any system libraries rustc links against are already in the target's LIBS.