diff --git a/Makefile b/Makefile
index b549f51..7364458 100644
--- a/Makefile
+++ b/Makefile
@@ -41,7 +41,7 @@ build:
 
 run:
 ifeq ($(OS),Windows_NT)
-	PS_CMD = $$env:PATH += ';./libs'; .\$(BIN_NAME)
+PS_CMD := $$env:PATH += ';./libs'; .\$(BIN_NAME)
 	pwsh -Command "$(PS_CMD)"
 else ifeq ($(UNAME_S),Darwin)
 # 	Instead of relying on install_name_tool, we can define DYLD_LIBRARY_PATH