diff --git a/zcsf/Makefile b/zcsf/Makefile
index 6756aaf..9088c09 100644
--- a/zcsf/Makefile
+++ b/zcsf/Makefile
@@ -19,7 +19,7 @@ $(shell mkdir -p $(BINDIR))
 # automatically finds .h
 DEPS = $(shell find $(IDIR) -type f -regex '.*\.h')
 # automatically finds .c and makes the corresponding .o rule
-OBJ = $(shell find $(SRCDIR) -type f -regex '.*\.c' | sed 's|\.c$|.o|g;s|$(SRCDIR)/|$(ODIR)/|g')
+OBJ = $(shell find $(SRCDIR) -type f -regex '.*\.c' | sed 's|\.c|.o|g;s|$(SRCDIR)/|$(ODIR)/|g')
 
 $(ODIR)/%.o: $(SRCDIR)/%.c $(DEPS)
 	$(CC) $(CXXFLAGS) -c -o $@ $<
diff --git a/zcsf/Makefile_cpp b/zcsf/Makefile_cpp
index 8539564..734c82c 100644
--- a/zcsf/Makefile_cpp
+++ b/zcsf/Makefile_cpp
@@ -8,9 +8,11 @@ NAME = hello
 LDFLAGS =
 
 CC=g++
-CXXFLAGS= -I$(IDIR) -Wall -pedantic -std=c++17 -O2
+CXXFLAGS= -I$(IDIR) -Wall -pedantic -std=c++17
 ifeq	 ($(DEBUG),true)
 	CXXFLAGS += -g
+else
+	CXXFLAGS += -O2
 endif
 
 $(shell mkdir -p $(ODIR))
@@ -19,7 +21,7 @@ $(shell mkdir -p $(BINDIR))
 # automatically finds .h and .hpp
 DEPS = $(shell find $(IDIR) -type f -regex '.*\.hp?p?')
 # automatically finds .c and .cpp and makes the corresponding .o rule
-OBJ = $(shell find $(SRCDIR) -type f -regex '.*\.cp?p?' | sed 's|\.cp?p?$|.o|g;s|$(SRCDIR)/|$(ODIR)/|g')
+OBJ = $(shell find $(SRCDIR) -type f -regex '.*\.cp?p?' | sed 's|\.cpp|.o|g;s|\.c|.o|g;s|$(SRCDIR)/|$(ODIR)/|g')
 
 $(ODIR)/%.o: $(SRCDIR)/%.c $(DEPS)
 	$(CC) $(CXXFLAGS) -c -o $@ $<
diff --git a/zcsf/zcsf b/zcsf/zcsf
index 9bebcb9..8b9fb54 100755
--- a/zcsf/zcsf
+++ b/zcsf/zcsf
@@ -28,7 +28,7 @@ else
   local_configpath="$HOME/.config/zcsf"
 fi
 
-usr_configpath="/usr/share/z/zcsf"
+usr_configpath="/usr/share/zcsf"
 
 if [ -n "$CONFIGPATH" ]
 then
diff --git a/zcsf/zcsf.bash b/zcsf/zcsf.bash
index 33a02bc..9975259 100644
--- a/zcsf/zcsf.bash
+++ b/zcsf/zcsf.bash
@@ -19,7 +19,7 @@ _zcsf_completion()
     _compwords=""
   fi
 
-  COMPREPLY=($(compgen -W "$_compwords" "${COMP_WORDS[$COMP_CWORD]}"))
+  COMPREPLY=($(compgen -W "$_compwords" "${COMP_WORDS[$COMP_CWORD]}" 2>/dev/null))
 }
 
 complete -F _zcsf_completion -o dirnames zcsf