diff --git a/nyx/interface.c b/nyx/interface.c
index 56ffc54d7c..eabbae9972 100644
--- a/nyx/interface.c
+++ b/nyx/interface.c
@@ -260,30 +260,6 @@ static bool verify_workdir_state(nyx_interface_state *s, Error **errp){
 	}
 	free(tmp);
 
-	assert(asprintf(&tmp, "%s/page_cache.lock", workdir) != -1);
-	if (!file_exits(tmp)){
-		fprintf(stderr, "%s does not exist...", tmp);
-		free(tmp);
-		return false;
-	}
-	free(tmp);
-
-	assert(asprintf(&tmp, "%s/page_cache.addr", workdir) != -1);
-	if (!file_exits(tmp)){
-		fprintf(stderr, "%s does not exist...\n", tmp);
-		free(tmp);
-		return false;
-	}
-	free(tmp);
-
-	assert(asprintf(&tmp, "%s/page_cache.dump", workdir) != -1);
-	if (!file_exits(tmp)){
-		fprintf(stderr,  "%s does not exist...\n", tmp);
-		free(tmp);
-		return false;
-	}
-	free(tmp);
-
 	assert(asprintf(&tmp, "%s/page_cache", workdir) != -1);
 	init_page_cache(tmp);
 
diff --git a/nyx/page_cache.c b/nyx/page_cache.c
index 7d40dff85e..55689316c8 100644
--- a/nyx/page_cache.c
+++ b/nyx/page_cache.c
@@ -359,12 +359,12 @@ page_cache_t* page_cache_new(const char* cache_file, uint8_t disassembler_word_w
 
 
 	self->lookup = kh_init(PC_CACHE);
-	self->fd_page_file = open(tmp1, O_CLOEXEC | O_RDWR, S_IRWXU);
-	self->fd_address_file = open(tmp2, O_CLOEXEC | O_RDWR, S_IRWXU);
+	self->fd_page_file = open(tmp1, O_CLOEXEC | O_CREAT | O_RDWR, 0644);
+	self->fd_address_file = open(tmp2, O_CLOEXEC | O_CREAT | O_RDWR, 0644);
 
 #ifndef STANDALONE_DECODER
 	self->cpu = cpu;
-	self->fd_lock = open(tmp3, O_CLOEXEC);
+	self->fd_lock = open(tmp3, O_CLOEXEC | O_CREAT, 0644);
 	assert(self->fd_lock > 0);
 #else
 	if(self->fd_page_file == -1 || self->fd_address_file == -1){
diff --git a/nyx/pt.c b/nyx/pt.c
index 80de789ed1..193ef8ea09 100644
--- a/nyx/pt.c
+++ b/nyx/pt.c
@@ -58,7 +58,7 @@ bool should_dump_pt_trace= false; /* dump PT trace as returned from HW */
 
 void pt_open_pt_trace_file(char* filename){
   printf("using pt trace at %s",filename);
-  pt_trace_dump_fd = open(filename, O_WRONLY);
+  pt_trace_dump_fd = open(filename, O_CREAT|O_TRUNC|O_WRONLY, 0644);
   should_dump_pt_trace = true;
   assert(pt_trace_dump_fd >= 0);
 }