diff --git a/src/context.c b/src/context.c
index dbb377d..dfd736f 100644
--- a/src/context.c
+++ b/src/context.c
@@ -67,7 +67,7 @@ struct _msym_context {
  * Public API
  ***********************/
 
-msym_context msymCreateContext(){
+msym_context msymCreateContext(void){
     msym_context ctx = malloc(sizeof(struct _msym_context));
     msym_thresholds_t *threshols = malloc(sizeof(msym_thresholds_t));
     
@@ -90,7 +90,7 @@ msym_context msymCreateContext(){
     return NULL;
 }
 
-const msym_thresholds_t *msymGetDefaultThresholds(){
+const msym_thresholds_t *msymGetDefaultThresholds(void){
     return &default_thresholds;
 }
 
diff --git a/src/msym.h b/src/msym.h
index 78ad491..1d4164e 100644
--- a/src/msym.h
+++ b/src/msym.h
@@ -162,10 +162,10 @@ extern "C" {
     } msym_character_table_t;
 
     
-    msym_context MSYM_EXPORT msymCreateContext();
+    msym_context MSYM_EXPORT msymCreateContext(void);
     msym_error_t MSYM_EXPORT msymReleaseContext(msym_context ctx);
     
-    const msym_thresholds_t MSYM_EXPORT *msymGetDefaultThresholds();
+    const msym_thresholds_t MSYM_EXPORT *msymGetDefaultThresholds(void);
     msym_error_t MSYM_EXPORT msymSetThresholds(msym_context ctx, const msym_thresholds_t *thresholds);
     msym_error_t MSYM_EXPORT msymGetThresholds(msym_context ctx, const msym_thresholds_t **thresholds);
     msym_error_t MSYM_EXPORT msymSetElements(msym_context ctx, int length, msym_element_t *elements);
diff --git a/src/msym_error.c b/src/msym_error.c
index 53483eb..98c7168 100644
--- a/src/msym_error.c
+++ b/src/msym_error.c
@@ -53,7 +53,7 @@ void msymSetErrorDetails(const char *format, ...){
     va_end(args);
 }
 
-const char MSYM_EXPORT *msymGetErrorDetails(){
+const char MSYM_EXPORT *msymGetErrorDetails(void){
     snprintf(err_details_ext, sizeof(err_details_ext), "%s",err_details); // Not really necessary
     msymSetErrorDetails("");
     return err_details_ext;
diff --git a/src/msym_error.h b/src/msym_error.h
index bb6cf93..01e424f 100644
--- a/src/msym_error.h
+++ b/src/msym_error.h
@@ -44,7 +44,7 @@ extern "C" {
     
     const char *msymErrorString(msym_error_t error);
     void msymSetErrorDetails(const char *format, ...);
-    const char *msymGetErrorDetails();
+    const char *msymGetErrorDetails(void);
     
     
 #ifdef __cplusplus