diff --git a/src/intel/compiler/brw_eu.c b/src/intel/compiler/brw_eu.c
index ba5779f26ea..0e9f24e3026 100644
--- a/src/intel/compiler/brw_eu.c
+++ b/src/intel/compiler/brw_eu.c
@@ -310,7 +310,7 @@ void brw_dump_shader_bin(void *assembly, int start_offset, int end_offset,
                                 debug_get_option_shader_bin_dump_path(),
                                 identifier);
 
-   int fd = open(name, O_CREAT | O_WRONLY, 0777);
+   int fd = open(name, O_CREAT | O_WRONLY | O_TRUNC, 0644);
    ralloc_free(name);
 
    if (fd < 0)
diff --git a/src/intel/compiler/elk/elk_eu.c b/src/intel/compiler/elk/elk_eu.c
index 04338026c2a..39381f3200f 100644
--- a/src/intel/compiler/elk/elk_eu.c
+++ b/src/intel/compiler/elk/elk_eu.c
@@ -376,7 +376,7 @@ void elk_dump_shader_bin(void *assembly, int start_offset, int end_offset,
                                 debug_get_option_shader_bin_dump_path(),
                                 identifier);
 
-   int fd = open(name, O_CREAT | O_WRONLY, 0777);
+   int fd = open(name, O_CREAT | O_WRONLY | O_TRUNC, 0644);
    ralloc_free(name);
 
    if (fd < 0)