diff --git a/.gitignore b/.gitignore
index 41b784b..1d8c1af 100644
--- a/.gitignore
+++ b/.gitignore
@@ -4,5 +4,6 @@
 deps.mk
 logger_test
 snprintf_test
+assert_test
 README.pdf
-.vscode
+.vscode
\ No newline at end of file
diff --git a/README.rst b/README.rst
index 6e1e211..d166a97 100644
--- a/README.rst
+++ b/README.rst
@@ -4,7 +4,7 @@ Vanilla Squad
 
 :Author: Daniel Walker
 
-Version 5.1.0 was released on October 3, 2021.
+Version 5.1.1 was released on October 8, 2021.
 
 Overview
 ========
@@ -175,8 +175,9 @@ Placeholders
 ============
 
 placeholder.h defines a single macro: **PLACEHOLDER()**.  If either the **DEBUG** or
-**VASQ_ALLOW_PLACEHOLDER** macros are defined, then **PLACEHOLDER()** will resolve to a no op.  Otherwise,
-it will resolve to a compiler error.  The intended use case is
+**VASQ_ALLOW_PLACEHOLDER** macros are defined and **VASQ_REJECT_PLACEHOLDER** is not defined, then
+**PLACEHOLDER()** will resolve to a no op.  Otherwise, it will resolve to a compiler error.  The intended use
+case is
 
 .. code-block:: c
 
diff --git a/changelog b/changelog
index 956a77b..30e050c 100644
--- a/changelog
+++ b/changelog
@@ -1,3 +1,7 @@
+5.1.1:
+    - The PLACEHOLDER() macro no longer depends upon features.h.
+    - Fixed how VASQ_REJECT_PLACEHOLDER works.
+
 5.1.0:
     - Remove some writes to stderr which occurred when vasqLoggerCreate failed.
     - Added the VASQ_ASSERT macro.
diff --git a/include/vasq/definitions.h b/include/vasq/definitions.h
index 7a9d47f..c59c8f6 100644
--- a/include/vasq/definitions.h
+++ b/include/vasq/definitions.h
@@ -9,7 +9,7 @@
 /**
  * @brief Current version of the library.
  */
-#define VASQ_VERSION "5.1.0"
+#define VASQ_VERSION "5.1.1"
 
 #ifndef NO_OP
 #define NO_OP ((void)0)
diff --git a/include/vasq/placeholder.h b/include/vasq/placeholder.h
index 872020f..03daae5 100644
--- a/include/vasq/placeholder.h
+++ b/include/vasq/placeholder.h
@@ -6,39 +6,25 @@
 #ifndef VANILLA_SQUAD_PLACEHOLDER_H
 #define VANILLA_SQUAD_PLACEHOLDER_H
 
-#include <features.h>
-
 #include "config.h"
 #include "definitions.h"
 
 #ifdef __USE_ISOC99
 
-#if (defined(DEBUG) || defined(VASQ_ALLOW_PLACEHOLDER)) && !defined(VASQ_REJECT_PLACEHOLDER)
+#if defined(VASQ_REJECT_PLACEHOLDER) || (!defined(DEBUG) && !defined(VASQ_ALLOW_PLACEHOLDER))
 
-#ifdef VASQ_WARN_PLACEHOLDER
+#define PLACEHOLDER() _Pragma("GCC error \"Placeholder code left in project.\"")
 
-#ifdef VASQ_REJECT_PLACEHOLDER
-#warning "VASQ_WARN_PLACEHOLDER and VASQ_REJECT_PLACEHOLDER are both defined."
-#endif
+#elif defined(VASQ_WARN_PLACEHOLDER)
 
 #define PLACEHOLDER() _Pragma("GCC warning \"Placeholder code left in project.\"")
 
-#else  // VASQ_WARN_PLACEHOLDER
+#else
 
 #define PLACEHOLDER() NO_OP
 
-#endif  // VASQ_WARN_PLACEHOLDER
-
-#else  // (defined(DEBUG) || defined(VASQ_ALLOW_PLACEHOLDER)) && !defined(VASQ_REJECT_PLACEHOLDER)
-
-#ifdef VASQ_ALLOW_PLACEHOLDER
-#warning "VASQ_ALLOW_PLACEHOLDER and VASQ_REJECT_PLACEHOLDER are both defined."
 #endif
 
-#define PLACEHOLDER() _Pragma("GCC error \"Placeholder code left in project.\"")
-
-#endif  // (defined(DEBUG) || defined(VASQ_ALLOW_PLACEHOLDER)) && !defined(VASQ_REJECT_PLACEHOLDER)
-
 #else  // __USE_ISOC99
 
 #warning "_Pragma not defined and so PLACEHOLDER() will not work."