diff --git a/Makefile.frag.w32 b/Makefile.frag.w32
index 3867384..9a59e05 100644
--- a/Makefile.frag.w32
+++ b/Makefile.frag.w32
@@ -30,7 +30,5 @@ $(AWSCRT_DIR)\ext\api.h : $(AWSCRT_DIR)\src\api.h
 
 # Use PHPUnit and composer to run tests
 test-awscrt: install $(AWSCRT_DIR)\src\api.h $(BUILD_DIR)\php_awscrt.dll
-	path = where.exe composer.phar
-	COMPOSER_PHAR = %%path%%
-	$(PHP_BINARY) -c $(AWSCRT_DIR)\php-win.ini $(COMPOSER_PHAR) --working-dir=$(AWSCRT_DIR) update
-	$(PHP_BINARY) -c $(AWSCRT_DIR)\php-win.ini $(COMPOSER_PHAR) --working-dir=$(AWSCRT_DIR) run test-win
\ No newline at end of file
+	$(PHP_BINARY) -c $(AWSCRT_DIR)\php-win.ini composer.phar --working-dir=$(AWSCRT_DIR) update
+	$(PHP_BINARY) -c $(AWSCRT_DIR)\php-win.ini composer.phar --working-dir=$(AWSCRT_DIR) run test-win
\ No newline at end of file