diff --git a/src/dir.c b/src/dir.c
index 587ff529..2694738e 100644
--- a/src/dir.c
+++ b/src/dir.c
@@ -107,15 +107,15 @@ static char ftypelet (unsigned int bits)
 void mode_string (const unsigned int mode, char *str)
 {
   str[0] = ftypelet(mode);
-  str[1] = mode & LINUX_S_IRUSR ? 'r' : '-';
-  str[2] = mode & LINUX_S_IWUSR ? 'w' : '-';
-  str[3] = mode & LINUX_S_IXUSR ? 'x' : '-';
-  str[4] = mode & LINUX_S_IRGRP ? 'r' : '-';
-  str[5] = mode & LINUX_S_IWGRP ? 'w' : '-';
-  str[6] = mode & LINUX_S_IXGRP ? 'x' : '-';
-  str[7] = mode & LINUX_S_IROTH ? 'r' : '-';
-  str[8] = mode & LINUX_S_IWOTH ? 'w' : '-';
-  str[9] = mode & LINUX_S_IXOTH ? 'x' : '-';
+  str[1] = (mode & LINUX_S_IRUSR) ? 'r' : '-';
+  str[2] = (mode & LINUX_S_IWUSR) ? 'w' : '-';
+  str[3] = (mode & LINUX_S_IXUSR) ? 'x' : '-';
+  str[4] = (mode & LINUX_S_IRGRP) ? 'r' : '-';
+  str[5] = (mode & LINUX_S_IWGRP) ? 'w' : '-';
+  str[6] = (mode & LINUX_S_IXGRP) ? 'x' : '-';
+  str[7] = (mode & LINUX_S_IROTH) ? 'r' : '-';
+  str[8] = (mode & LINUX_S_IWOTH) ? 'w' : '-';
+  str[9] = (mode & LINUX_S_IXOTH) ? 'x' : '-';
   str[10]='\0';
 #ifdef LINUX_S_ISUID
   if (mode & LINUX_S_ISUID)
diff --git a/src/ewf.c b/src/ewf.c
index 195b54fa..a157f310 100644
--- a/src/ewf.c
+++ b/src/ewf.c
@@ -270,7 +270,7 @@ disk_t *fewf_init(const char *device, const int mode)
   disk->description=fewf_description;
   disk->description_short=fewf_description_short;
   disk->pread=fewf_pread;
-  disk->pwrite=(data->mode&TESTDISK_O_RDWR?fewf_pwrite:fewf_nopwrite);
+  disk->pwrite=((data->mode&TESTDISK_O_RDWR)?fewf_pwrite:fewf_nopwrite);
   disk->sync=fewf_sync;
   disk->access_mode=(data->mode&TESTDISK_O_RDWR);
   disk->clean=fewf_clean;