diff --git a/contrib/adaptive-compression/Makefile b/contrib/adaptive-compression/Makefile
index 0e081a670..b1c498c93 100644
--- a/contrib/adaptive-compression/Makefile
+++ b/contrib/adaptive-compression/Makefile
@@ -6,15 +6,7 @@ ZSTDCOMP_FILES   := $(ZSTDDIR)/compress/*.c
 ZSTDDECOMP_FILES := $(ZSTDDIR)/decompress/*.c
 ZSTD_FILES  := $(ZSTDDECOMP_FILES) $(ZSTDCOMMON_FILES) $(ZSTDCOMP_FILES)
 
-# Define *.exe as extension for Windows systems
-ifneq (,$(filter Windows%,$(OS)))
-EXT =.exe
-MULTITHREAD_LD  =
-else
-EXT =
-MULTITHREAD_LD  = -pthread
-endif
-
+MULTITHREAD_LDFLAGS = -pthread
 DEBUGFLAGS= -g -DZSTD_DEBUG=1
 CPPFLAGS += -I$(ZSTDDIR) -I$(ZSTDDIR)/common -I$(ZSTDDIR)/compress \
             -I$(ZSTDDIR)/dictBuilder -I$(ZSTDDIR)/deprecated -I$(PRGDIR)
@@ -26,7 +18,7 @@ CFLAGS   += -Wall -Wextra -Wcast-qual -Wcast-align -Wshadow                 \
             -Wredundant-decls
 CFLAGS   += $(DEBUGFLAGS)
 CFLAGS   += $(MOREFLAGS)
-FLAGS     = $(CPPFLAGS) $(CFLAGS) $(LDFLAGS) $(MULTITHREAD_LD)
+FLAGS     = $(CPPFLAGS) $(CFLAGS) $(LDFLAGS) $(MULTITHREAD_LDFLAGS)
 
 all: adapt datagen