diff --git a/Makefile b/Makefile
index 43df8de..56887be 100644
--- a/Makefile
+++ b/Makefile
@@ -24,12 +24,12 @@ ifdef WIN
 	SUBDIRS += host/win
 endif
 
+.PHONY: $(TOPTARGETS) $(SUBDIRS) install
+
 $(TOPTARGETS): $(SUBDIRS)
 
 $(SUBDIRS):
-	$(MAKE) -j1 -C $@ $(MAKECMDGOALS)
-
-.PHONY: $(TOPTARGETS) $(SUBDIRS)
+	$(MAKE) -C $@ $(MAKECMDGOALS)
 
 install:
 	cp -r samples/. $(DESTDIR)/samples
diff --git a/crt/Makefile b/crt/Makefile
index c106f46..a1f4d09 100644
--- a/crt/Makefile
+++ b/crt/Makefile
@@ -41,6 +41,8 @@ OBJ := crt.o syscall.o klog.o nid.o kernel.o rtld.o rtld_so.o rtld_sprx.o \
 
 ARCHIVE := libcrt.a
 
+.PHONY: all clean install
+
 all: $(ARCHIVE)
 
 $(ARCHIVE): $(OBJ)
diff --git a/host/Makefile b/host/Makefile
index 4c8b486..8745fa7 100644
--- a/host/Makefile
+++ b/host/Makefile
@@ -36,6 +36,8 @@ TOOLS := bin/cmake-bin-wrapper \
 
 LDSCRIPTS := elf_x86_64.x
 
+.PHONY: all clean install
+
 all: bin/prospero-nid
 
 clean:
diff --git a/include/Makefile b/include/Makefile
index ba704cd..4fc3241 100644
--- a/include/Makefile
+++ b/include/Makefile
@@ -16,6 +16,8 @@
 
 DESTDIR ?= /opt/ps5-payload-sdk
 
+.PHONY: all clean install
+
 all:
 
 clean:
diff --git a/libc/Makefile b/libc/Makefile
index 086df50..f29de23 100644
--- a/libc/Makefile
+++ b/libc/Makefile
@@ -39,6 +39,8 @@ OBJS := $(SRCS:.c=.o)
 
 ARCHIVE := libc.a
 
+.PHONY: all clean install
+
 all: $(ARCHIVE)
 
 $(ARCHIVE): $(OBJS)
diff --git a/sce_stubs/Makefile b/sce_stubs/Makefile
index 653b053..11f0fd8 100644
--- a/sce_stubs/Makefile
+++ b/sce_stubs/Makefile
@@ -44,6 +44,8 @@ SHARED   := $(SOURCES:.c=.so)
 NID_DB     := aerolib.csv
 NID_DB_URL := https://raw.githubusercontent.com/zecoxao/sce_symbols/main/$(NID_DB)
 
+.PHONY: all clean install
+
 all: $(SOURCES) $(SHARED)
 
 stubs: $(NID_DB) $(STUBS)