diff --git a/data/16x16/Makefile b/data/16x16/Makefile
index 2480fb5..24d0819 100644
--- a/data/16x16/Makefile
+++ b/data/16x16/Makefile
@@ -1,6 +1,6 @@
 PREFIX	= /usr/local
 DESTDIR	=
-MKDIR	= mkdir -p
+MKDIR	= mkdir -m 0755 -p
 INSTALL	= install
 RM	= rm -f
 
diff --git a/data/24x24/Makefile b/data/24x24/Makefile
index 75c062a..5981ccd 100644
--- a/data/24x24/Makefile
+++ b/data/24x24/Makefile
@@ -1,6 +1,6 @@
 PREFIX	= /usr/local
 DESTDIR	=
-MKDIR	= mkdir -p
+MKDIR	= mkdir -m 0755 -p
 INSTALL	= install
 RM	= rm -f
 
diff --git a/data/48x48/Makefile b/data/48x48/Makefile
index 475ec44..9dd6ed9 100644
--- a/data/48x48/Makefile
+++ b/data/48x48/Makefile
@@ -1,6 +1,6 @@
 PREFIX	= /usr/local
 DESTDIR	=
-MKDIR	= mkdir -p
+MKDIR	= mkdir -m 0755 -p
 INSTALL	= install
 RM	= rm -f
 
diff --git a/data/Makefile b/data/Makefile
index 7150eef..0a59eb7 100644
--- a/data/Makefile
+++ b/data/Makefile
@@ -1,5 +1,5 @@
 SUBDIRS	= 16x16 24x24 48x48
-MKDIR	= mkdir -p
+MKDIR	= mkdir -m 0755 -p
 INSTALL	= install
 RM	= rm -f
 TARGETS	= Mailer.pc
@@ -7,7 +7,7 @@ PREFIX	= /usr/local
 DESTDIR	=
 RM	= rm -f
 LN	= ln -f
-MKDIR	= mkdir -p
+MKDIR	= mkdir -m 0755 -p
 INSTALL	= install
 
 
diff --git a/doc/Makefile b/doc/Makefile
index 89591fc..397e202 100644
--- a/doc/Makefile
+++ b/doc/Makefile
@@ -4,7 +4,7 @@ PREFIX	= /usr/local
 DESTDIR	=
 RM	= rm -f
 LN	= ln -f
-MKDIR	= mkdir -p
+MKDIR	= mkdir -m 0755 -p
 INSTALL	= install
 
 
diff --git a/include/Mailer/Makefile b/include/Mailer/Makefile
index af4c8b2..211863b 100644
--- a/include/Mailer/Makefile
+++ b/include/Mailer/Makefile
@@ -2,7 +2,7 @@ PREFIX	= /usr/local
 DESTDIR	=
 RM	= rm -f
 LN	= ln -f
-MKDIR	= mkdir -p
+MKDIR	= mkdir -m 0755 -p
 INSTALL	= install
 INCLUDEDIR= $(PREFIX)/include
 
diff --git a/include/Makefile b/include/Makefile
index 469d748..a4817aa 100644
--- a/include/Makefile
+++ b/include/Makefile
@@ -3,7 +3,7 @@ PREFIX	= /usr/local
 DESTDIR	=
 RM	= rm -f
 LN	= ln -f
-MKDIR	= mkdir -p
+MKDIR	= mkdir -m 0755 -p
 INSTALL	= install
 INCLUDEDIR= $(PREFIX)/include
 
diff --git a/po/Makefile b/po/Makefile
index 69e6e62..175506d 100644
--- a/po/Makefile
+++ b/po/Makefile
@@ -3,7 +3,7 @@ PREFIX	= /usr/local
 DESTDIR	=
 RM	= rm -f
 LN	= ln -f
-MKDIR	= mkdir -p
+MKDIR	= mkdir -m 0755 -p
 INSTALL	= install
 
 
diff --git a/src/Makefile b/src/Makefile
index 072ac5a..f0615ed 100644
--- a/src/Makefile
+++ b/src/Makefile
@@ -17,7 +17,7 @@ BINDIR	= $(PREFIX)/bin
 SBINDIR	= $(PREFIX)/sbin
 RM	= rm -f
 LN	= ln -f
-MKDIR	= mkdir -p
+MKDIR	= mkdir -m 0755 -p
 INSTALL	= install
 
 
diff --git a/src/account/Makefile b/src/account/Makefile
index ce2fe7a..009afdf 100644
--- a/src/account/Makefile
+++ b/src/account/Makefile
@@ -13,7 +13,7 @@ RANLIB	= ranlib
 CCSHARED= $(CC) -shared
 RM	= rm -f
 LN	= ln -f
-MKDIR	= mkdir -p
+MKDIR	= mkdir -m 0755 -p
 INSTALL	= install
 
 
diff --git a/src/plugins/Makefile b/src/plugins/Makefile
index 2c90ab5..2ad151a 100644
--- a/src/plugins/Makefile
+++ b/src/plugins/Makefile
@@ -13,7 +13,7 @@ RANLIB	= ranlib
 CCSHARED= $(CC) -shared
 RM	= rm -f
 LN	= ln -f
-MKDIR	= mkdir -p
+MKDIR	= mkdir -m 0755 -p
 INSTALL	= install
 
 
diff --git a/tests/Makefile b/tests/Makefile
index 9cbcb46..5affad4 100644
--- a/tests/Makefile
+++ b/tests/Makefile
@@ -11,7 +11,7 @@ CFLAGS	= -Wall -g -O2 -ffreestanding
 LDFLAGS	= 
 RM	= rm -f
 LN	= ln -f
-MKDIR	= mkdir -p
+MKDIR	= mkdir -m 0755 -p
 INSTALL	= install