diff --git a/configure b/configure
index b364520a91..d8c0817433 100755
--- a/configure
+++ b/configure
@@ -5205,6 +5205,10 @@ fi
 echores "$_openal"
 
 echocheck "ALSA audio"
+if test "$_alloca" != yes ; then
+  _alsa=no
+  _res_comment="alloca missing"
+fi
 if test "$_alsa" != no ; then
   _alsa=no
   cat > $TMPC << EOF
diff --git a/libao2/ao_alsa.c b/libao2/ao_alsa.c
index 0d925ce9e3..987713e6f9 100644
--- a/libao2/ao_alsa.c
+++ b/libao2/ao_alsa.c
@@ -19,6 +19,7 @@
 #include <ctype.h>
 #include <math.h>
 #include <string.h>
+#include <alloca.h>
 
 #include "config.h"
 #include "subopt-helper.h"
diff --git a/stream/ai_alsa.c b/stream/ai_alsa.c
index a1468bed09..84d0aa58a4 100644
--- a/stream/ai_alsa.c
+++ b/stream/ai_alsa.c
@@ -1,6 +1,7 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <sys/time.h>
+#include <alloca.h>
 
 #include "config.h"
 
diff --git a/stream/ai_alsa1x.c b/stream/ai_alsa1x.c
index 455c64191f..aab42e397b 100644
--- a/stream/ai_alsa1x.c
+++ b/stream/ai_alsa1x.c
@@ -1,6 +1,7 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <sys/time.h>
+#include <alloca.h>
 
 #include "config.h"