diff --git a/configure.in b/configure.in
index 58c0ff9c..724b1245 100644
--- a/configure.in
+++ b/configure.in
@@ -37,7 +37,7 @@ dnl Checks for header files.
 AC_HEADER_STDC
 AC_CHECK_HEADERS(asm/ptrace_offsets.h endian.h sys/endian.h execinfo.h \
 		ia64intrin.h sys/uc_access.h unistd.h signal.h sys/types.h \
-		sys/procfs.h)
+		sys/procfs.h sys/ptrace.h)
 
 dnl Checks for typedefs, structures, and compiler characteristics.
 AC_C_CONST
diff --git a/src/ptrace/_UPT_internal.h b/src/ptrace/_UPT_internal.h
index ff11e738..bfc26b04 100644
--- a/src/ptrace/_UPT_internal.h
+++ b/src/ptrace/_UPT_internal.h
@@ -33,7 +33,9 @@ WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.  */
 #ifdef HAVE_SYS_TYPES_H
 #include <sys/types.h>
 #endif
+#ifdef HAVE_SYS_PTRACE_H
 #include <sys/ptrace.h>
+#endif
 #ifdef HAVE_SYS_PROCFS_H
 #include <sys/procfs.h>
 #endif