diff --git a/src/examples/benchmark.cc b/src/examples/benchmark.cc
index 26362f2..5dae9f2 100644
--- a/src/examples/benchmark.cc
+++ b/src/examples/benchmark.cc
@@ -44,6 +44,7 @@
 #include "user.h"
 #include "terminaloverlay.h"
 #include "locale_utils.h"
+#include "fatal_assert.h"
 
 const int ITERATIONS = 100000;
 
@@ -61,7 +62,7 @@ int main( void )
 
   /* Adopt native locale */
   set_native_locale();
-  assert( is_utf8_locale() );
+  fatal_assert( is_utf8_locale() );
 
   for ( int i = 0; i < ITERATIONS; i++ ) {
     /* type a character */
diff --git a/src/examples/parse.cc b/src/examples/parse.cc
index 87eea42..f507eec 100644
--- a/src/examples/parse.cc
+++ b/src/examples/parse.cc
@@ -42,6 +42,7 @@
 #include "parser.h"
 #include "swrite.h"
 #include "locale_utils.h"
+#include "fatal_assert.h"
 
 const size_t buf_size = 1024;
 
@@ -57,7 +58,7 @@ int main( int argc __attribute__((unused)),
   struct termios saved_termios, raw_termios, child_termios;
 
   set_native_locale();
-  assert( is_utf8_locale() );
+  fatal_assert( is_utf8_locale() );
 
   if ( tcgetattr( STDIN_FILENO, &saved_termios ) < 0 ) {
     perror( "tcgetattr" );
diff --git a/src/examples/termemu.cc b/src/examples/termemu.cc
index 90b4372..9c9f63b 100644
--- a/src/examples/termemu.cc
+++ b/src/examples/termemu.cc
@@ -62,7 +62,7 @@ int main( void )
   struct termios saved_termios, raw_termios, child_termios;
 
   set_native_locale();
-  assert( is_utf8_locale() );
+  fatal_assert( is_utf8_locale() );
 
   if ( tcgetattr( STDIN_FILENO, &saved_termios ) < 0 ) {
     perror( "tcgetattr" );
diff --git a/src/frontend/mosh-server.cc b/src/frontend/mosh-server.cc
index c68d339..46a5533 100644
--- a/src/frontend/mosh-server.cc
+++ b/src/frontend/mosh-server.cc
@@ -214,7 +214,7 @@ int main( int argc, char *argv[] )
 	  i != locale_vars.end();
 	  i++ ) {
       char *env_string = strdup( i->c_str() );
-      assert( env_string );
+      fatal_assert( env_string );
       if ( 0 != putenv( env_string ) ) {
 	perror( "putenv" );
       }