diff --git a/common/include/common/option.h b/common/include/common/option.h
index 738e3410..8f3dcdf9 100644
--- a/common/include/common/option.h
+++ b/common/include/common/option.h
@@ -80,7 +80,7 @@ struct Option * option_get       (const char * module, const char * name);
 int             option_get_int   (const char * module, const char * name);
 const char *    option_get_string(const char * module, const char * name);
 bool            option_get_bool  (const char * module, const char * name);
-bool            option_get_float (const char * module, const char * name);
+float           option_get_float (const char * module, const char * name);
 
 // called by the main application to parse the command line arguments
 bool option_parse(int argc, char * argv[]);
diff --git a/common/src/option.c b/common/src/option.c
index b3f0e78f..3e2fea76 100644
--- a/common/src/option.c
+++ b/common/src/option.c
@@ -793,7 +793,7 @@ bool option_get_bool(const char * module, const char * name)
   return o->value.x_bool;
 }
 
-bool option_get_float(const char * module, const char * name)
+float option_get_float(const char * module, const char * name)
 {
   struct Option * o = option_get(module, name);
   if (!o)