diff --git a/main.c b/main.c
index e737b58..3ea348d 100644
--- a/main.c
+++ b/main.c
@@ -10,6 +10,7 @@
 
 #define STRINGIFY_(x) #x
 #define STRINGIFY(x) STRINGIFY_(x)
+#define ARRAY_LEN(x) (sizeof(x) / sizeof((x)[0]))
 
 #define OPPAI_VERSION_STRING \
     STRINGIFY(OPPAI_VERSION_MAJOR) "." \
@@ -201,8 +202,7 @@ void asciiplt(float (* getvalue)(void* data, size_t i), size_t n,
 #endif
     };
 
-    static size_t const charsetsize =
-        sizeof(charset) / sizeof(charset[0]);
+    static size_t const charsetsize = ARRAY_LEN(charset);
 
     float values[ASCIIPLT_W];
     float minval = (float)get_inf();
@@ -926,7 +926,7 @@ output_by_name(char const* name)
 {
     int32_t i;
 
-    for (i = 0; i < sizeof(modules) / sizeof(modules[0]); ++i)
+    for (i = 0; i < ARRAY_LEN(modules); ++i)
     {
         if (!strcmp(modules[i].name, name)) {
             return &modules[i];
diff --git a/oppai.c b/oppai.c
index 3d5d23d..d05039e 100644
--- a/oppai.c
+++ b/oppai.c
@@ -51,7 +51,7 @@
 
 #define OPPAI_VERSION_MAJOR 1
 #define OPPAI_VERSION_MINOR 1
-#define OPPAI_VERSION_PATCH 51
+#define OPPAI_VERSION_PATCH 52
 
 /* if your compiler doesn't have stdint, define this */
 #ifdef OPPAI_NOSTDINT