diff --git a/progs/redbook/convolution.c b/progs/redbook/convolution.c
index 0543379f241..0898ef25e10 100644
--- a/progs/redbook/convolution.c
+++ b/progs/redbook/convolution.c
@@ -97,6 +97,7 @@ readImage( const char* filename, GLsizei* width, GLsizei *height )
     pixels = (GLubyte *) malloc( n * sizeof( GLubyte ));
     if ( !pixels ) {
 	fprintf( stderr, "Unable to malloc() bytes for pixels\n" );
+	fclose( infile );
 	return NULL;
     }
 
diff --git a/progs/redbook/histogram.c b/progs/redbook/histogram.c
index de1e59edea6..70a52825772 100644
--- a/progs/redbook/histogram.c
+++ b/progs/redbook/histogram.c
@@ -102,6 +102,7 @@ readImage( const char* filename, GLsizei* width, GLsizei *height )
     pixels = (GLubyte *) malloc( n * sizeof( GLubyte ));
     if ( !pixels ) {
 	fprintf( stderr, "Unable to malloc() bytes for pixels\n" );
+	fclose( infile );
 	return NULL;
     }
 
diff --git a/progs/redbook/minmax.c b/progs/redbook/minmax.c
index da5b875a475..8281800ba43 100644
--- a/progs/redbook/minmax.c
+++ b/progs/redbook/minmax.c
@@ -97,6 +97,7 @@ readImage( const char* filename, GLsizei* width, GLsizei *height )
     pixels = (GLubyte *) malloc( n * sizeof( GLubyte ));
     if ( !pixels ) {
 	fprintf( stderr, "Unable to malloc() bytes for pixels\n" );
+	fclose( infile );
 	return NULL;
     }