diff --git a/src/algorithms/libs/volk_gnsssdr_module/volk_gnsssdr/cpu_features/src/utils/list_cpu_features.c b/src/algorithms/libs/volk_gnsssdr_module/volk_gnsssdr/cpu_features/src/utils/list_cpu_features.c
index 51a53a462..965a8c15f 100644
--- a/src/algorithms/libs/volk_gnsssdr_module/volk_gnsssdr/cpu_features/src/utils/list_cpu_features.c
+++ b/src/algorithms/libs/volk_gnsssdr_module/volk_gnsssdr/cpu_features/src/utils/list_cpu_features.c
@@ -43,7 +43,7 @@ char gGlobalBuffer[64 * 1024];
 BumpAllocator gBumpAllocator = {.ptr = gGlobalBuffer,
     .size = sizeof(gGlobalBuffer)};
 
-static void internal_error()
+static void internal_error(void)
 {
     fputs("internal error\n", stderr);
     exit(EXIT_FAILURE);
@@ -51,12 +51,12 @@ static void internal_error()
 
 #define ALIGN 8
 
-static void assertAligned()
+static void assertAligned(void)
 {
     if ((uintptr_t)(gBumpAllocator.ptr) % ALIGN) internal_error();
 }
 
-static void BA_Align()
+static void BA_Align(void)
 {
     while (gBumpAllocator.size && (uintptr_t)(gBumpAllocator.ptr) % ALIGN)
         {
@@ -128,10 +128,10 @@ static Node* CreateConstantString(const char* value)
 }
 
 // Adds a map node.
-static Node* CreateMap() { return BA_CreateNode(NT_MAP); }
+static Node* CreateMap(void) { return BA_CreateNode(NT_MAP); }
 
 // Adds an array node.
-static Node* CreateArray() { return BA_CreateNode(NT_ARRAY); }
+static Node* CreateArray(void) { return BA_CreateNode(NT_ARRAY); }
 
 // Adds a formatted string node.
 static Node* CreatePrintfString(const char* format, ...)
@@ -385,7 +385,7 @@ static void AddCacheInfo(Node* root, const CacheInfo* cache_info)
     AddMapEntry(root, "cache_info", array);
 }
 
-static Node* CreateTree()
+static Node* CreateTree(void)
 {
     Node* root = CreateMap();
 #if defined(CPU_FEATURES_ARCH_X86)