diff --git jitterentropy.h jitterentropy.h
--- jitterentropy.h
+++ jitterentropy.h
@@ -158,6 +158,24 @@ extern "C" {
 #define JENT_PTHREAD
 #endif
 
+/* an ugly hack to revert an api change --> */
+#define JENT_PTHREAD
+#ifdef JENT_CONF_ENABLE_INTERNAL_TIMER
+#ifdef JENT_PTHREAD
+#include <pthread.h>
+struct jent_notime_ctx {
+	pthread_attr_t notime_pthread_attr;     /* pthreads library */
+	pthread_t notime_thread_id;             /* pthreads thread ID */
+};
+#else
+#include <threads.h>
+struct jent_notime_ctx {
+	thrd_t notime_thread_id;                /* thread ID */
+};
+#endif
+#endif
+/* <-- an ugly hack to revert an api change */
+
 /* Forward declaration of opaque value */
 struct rand_data;
 
diff --git src/jitterentropy-timer.c src/jitterentropy-timer.c
--- src/jitterentropy-timer.c
+++ src/jitterentropy-timer.c
@@ -24,19 +24,6 @@
 /* Timer-less entropy source */
 #ifdef JENT_CONF_ENABLE_INTERNAL_TIMER
 
-#ifdef JENT_PTHREAD
-#include <pthread.h>
-struct jent_notime_ctx {
-	pthread_attr_t notime_pthread_attr;     /* pthreads library */
-	pthread_t notime_thread_id;             /* pthreads thread ID */
-};
-#else
-#include <threads.h>
-struct jent_notime_ctx {
-	thrd_t notime_thread_id;                /* thread ID */
-};
-#endif
-
 /***************************************************************************
  * Thread handler
  ***************************************************************************/