diff --git a/Makefile b/Makefile
index 6d4a096..4fd6899 100644
--- a/Makefile
+++ b/Makefile
@@ -29,12 +29,22 @@ ifneq (,$(findstring MINGW,$(detected_OS)))
 endif
 
 # liblibchat and librln are both Rust staticlibs that embed Rust std,
-# resulting in duplicate symbol errors at link time. To mitigate that,
-# --allow-multiple-definition is added.
+# resulting in duplicate symbol errors at link time.
+# On Linux, --allow-multiple-definition suppresses the error.
+# On Darwin, Apple ld does not support that flag; instead we partial-link
+# liblibchat.a with ld -r, keeping only its public API symbols exported so
+# that all Rust std internals (including _rust_eh_personality) are hidden
+# and cannot conflict with the copy embedded in librln.a.
 ifeq ($(detected_OS),Linux)
   LDFLAGS := --passL:-Wl,--allow-multiple-definition
 endif
 
+ifeq ($(detected_OS),Darwin)
+  LIBCHAT_A := build/liblibchat_clean.a
+else
+  LIBCHAT_A := vendor/libchat/target/release/liblibchat.a
+endif
+
 ##########
 ## Main ##
 ##########
@@ -106,13 +116,23 @@ build-waku-nat:
 build-libchat:
 	@echo "Start building libchat"
 	cd vendor/libchat && cargo build --release
+ifeq ($(detected_OS),Darwin)
+	@mkdir -p build
+	@nm --no-llvm-bc -gjU vendor/libchat/target/release/liblibchat.a 2>/dev/null | \
+	    grep -E '^_(chat_|double_ratchet_|encrypt_result_|ffi_c_string_|installation_key_pair_|ratchet_state_|create_context|installation_name|destroy_context|destroy_string|create_intro_bundle|create_new_private_convo|send_content|handle_payload|destroy_intro_result|destroy_send_content_result|destroy_handle_payload_result|destroy_convo_result)' \
+	    > build/libchat_exports.txt
+	@ld -r -exported_symbols_list build/libchat_exports.txt \
+	    vendor/libchat/target/release/liblibchat.a \
+	    -o build/liblibchat_clean.o
+	@libtool -static -o $(LIBCHAT_A) build/liblibchat_clean.o
+endif
 	@echo "Completed building libchat"
 
 .PHONY: tests
 tests: | build-waku-librln build-waku-nat build-libchat logos_chat.nims
 	echo -e $(BUILD_MSG) "build/$@" && \
 		$(ENV_SCRIPT) nim tests $(NIM_PARAMS) \
-		--passL:vendor/libchat/target/release/liblibchat.a \
+		--passL:$(LIBCHAT_A) \
 		$(LDFLAGS) \
 		logos_chat.nims
 
@@ -125,7 +145,7 @@ tests: | build-waku-librln build-waku-nat build-libchat logos_chat.nims
 tui bot_echo pingpong: | build-waku-librln build-waku-nat build-libchat logos_chat.nims
 	echo -e $(BUILD_MSG) "build/$@" && \
 	$(ENV_SCRIPT) nim $@ $(NIM_PARAMS) \
-		--passL:vendor/libchat/target/release/liblibchat.a \
+		--passL:$(LIBCHAT_A) \
 		$(LDFLAGS) \
 		--path:src logos_chat.nims
 
@@ -148,7 +168,7 @@ LIBLOGOSCHAT := build/liblogoschat.$(LIBLOGOSCHAT_EXT)
 liblogoschat: | build-waku-librln build-waku-nat build-libchat logos_chat.nims
 	echo -e $(BUILD_MSG) "$(LIBLOGOSCHAT)" && \
 	$(ENV_SCRIPT) nim liblogoschat $(NIM_PARAMS) \
-		--passL:vendor/libchat/target/release/liblibchat.a \
+		--passL:$(LIBCHAT_A) \
 		$(LDFLAGS) \
 		--path:src logos_chat.nims && \
 	echo -e "\n\x1B[92mLibrary built successfully:\x1B[39m" && \
diff --git a/nix/libchat.nix b/nix/libchat.nix
index 393b6d0..f2f889d 100644
--- a/nix/libchat.nix
+++ b/nix/libchat.nix
@@ -31,6 +31,20 @@ in rPlatform.buildRustPackage {
     cp target/release/liblibchat.so   $out/lib/ 2>/dev/null || true
     cp target/release/liblibchat.dylib $out/lib/ 2>/dev/null || true
     cp target/release/liblibchat.a    $out/lib/ 2>/dev/null || true
+    ${lib.optionalString stdenv.isDarwin ''
+      # Partial-link liblibchat.a, keeping only its public API symbols exported.
+      # This hides all Rust std symbols (including _rust_eh_personality) so they
+      # do not conflict with the copy embedded in librln.a at final link time.
+      if [ -f "$out/lib/liblibchat.a" ]; then
+        nm --no-llvm-bc -gjU $out/lib/liblibchat.a 2>/dev/null | \
+            grep -E '^_(chat_|double_ratchet_|encrypt_result_|ffi_c_string_|installation_key_pair_|ratchet_state_|create_context|installation_name|destroy_context|destroy_string|create_intro_bundle|create_new_private_convo|send_content|handle_payload|destroy_intro_result|destroy_send_content_result|destroy_handle_payload_result|destroy_convo_result)' \
+            > $TMPDIR/libchat_exports.txt
+        ld -r -exported_symbols_list $TMPDIR/libchat_exports.txt \
+            $out/lib/liblibchat.a \
+            -o $TMPDIR/liblibchat_clean.o
+        libtool -static -o $out/lib/liblibchat.a $TMPDIR/liblibchat_clean.o
+      fi
+    ''}
     runHook postInstall
   '';
 }