diff --git a/crypto_sign/dilithium-iii/clean/GNUmakefile b/crypto_sign/dilithium-iii/clean/GNUmakefile
deleted file mode 100644
index 84a65680..00000000
--- a/crypto_sign/dilithium-iii/clean/GNUmakefile
+++ /dev/null
@@ -1,15 +0,0 @@
-LIB=libdilithium-iii_clean.a
-
-SOURCES=$(wildcard *.c)
-OBJECTS=$(patsubst %.c,%.o,$(SOURCES))
-
-CFLAGS=-Wall -Wextra -Wpedantic -Werror -std=c99 -I../../../common $(EXTRAFLAGS)
-
-all: $(LIB)
-
-$(LIB): $(OBJECTS)
-    $(AR) -r $@ $(OBJECTS)
-
-clean:
-    $(RM) $(OBJECTS)
-    $(RM) $(LIB)
diff --git a/crypto_sign/dilithium-iii/clean/Makefile.Microsoft_nmake b/crypto_sign/dilithium-iii/clean/Makefile.Microsoft_nmake
deleted file mode 100644
index 8bff3abc..00000000
--- a/crypto_sign/dilithium-iii/clean/Makefile.Microsoft_nmake
+++ /dev/null
@@ -1,14 +0,0 @@
-LIB=libdilithium-iii_clean.lib
-
-OBJECTS=ntt.obj packing.obj poly.obj polyvec.obj reduce.obj rounding.obj sign.obj
-
-CFLAGS=/I ..\..\..\common /W1 /WX
-
-all: $(LIB)
-
-$(LIB): $(OBJECTS)
-    LIB.EXE /OUT:$@ $**
-
-clean:
-    DEL $(OBJECTS)
-    DEL $(LIB)
diff --git a/scripts_windows/build_all.bat b/scripts_windows/build_all.bat
index 5b3b3bb2..44cec721 100644
--- a/scripts_windows/build_all.bat
+++ b/scripts_windows/build_all.bat
@@ -5,7 +5,7 @@ SET EL=0
 REM CALL "C:\Program Files (x86)\Microsoft Visual Studio\2017\Community\VC\Auxiliary\Build\vcvars64.bat"
 REM IF ERRORLEVEL 1 SET EL=1
 
-FOR /D %%K IN (crypto_kem\* crypto_sign\*) DO (
+FOR /D %%K IN (crypto_kem\*) DO (
   FOR /D %%L IN (%%K\*) DO (
     cd %%L
     nmake /f Makefile.Microsoft_nmake clean