diff --git a/README.md b/README.md
index 0ee553f..c97476b 100644
--- a/README.md
+++ b/README.md
@@ -7,7 +7,7 @@ Most of the functions have wrapper counterparts now, missing stuff is added on a
 This library is intended as a intermediate layer to be able to use imgui from other languages that can interface with C (like D - see [D-binding](https://github.com/Extrawurst/DerelictImgui))
 
 Notes:
-* currently this wrapper is based on version [1.47 of imgui](https://github.com/ocornut/imgui/releases/tag/v1.47)
+* currently this wrapper is based on version [1.48 of imgui](https://github.com/ocornut/imgui/releases/tag/v1.48)
 * does not compile with pure C compiler yet (for writing bindings in languages that are able to use C-ABI it is enough though, see D-bindings)
 
 # usage
diff --git a/cimgui/cimgui.h b/cimgui/cimgui.h
index f2760e4..38f8a3c 100644
--- a/cimgui/cimgui.h
+++ b/cimgui/cimgui.h
@@ -77,8 +77,8 @@ CIMGUI_API float            igGetScrollMaxX();
 CIMGUI_API float            igGetScrollMaxY();
 CIMGUI_API void             igSetScrollX(float scroll_x);
 CIMGUI_API void             igSetScrollY(float scroll_y);
-CIMGUI_API void             igSetScrollHere(float center_y_ratio = 0.5f);
-CIMGUI_API void             igSetScrollFromPosY(float pos_y, float center_y_ratio = 0.5f);
+CIMGUI_API void             igSetScrollHere(float center_y_ratio);
+CIMGUI_API void             igSetScrollFromPosY(float pos_y, float center_y_ratio);
 CIMGUI_API void             igSetKeyboardFocusHere(int offset);
 CIMGUI_API void             igSetStateStorage(ImGuiStorage* tree);
 CIMGUI_API ImGuiStorage*    igGetStateStorage();
@@ -210,12 +210,12 @@ CIMGUI_API bool             igDragFloat(CONST char* label, float* v, float v_spe
 CIMGUI_API bool             igDragFloat2(CONST char* label, float v[2], float v_speed, float v_min, float v_max, CONST char* display_format, float power);
 CIMGUI_API bool             igDragFloat3(CONST char* label, float v[3], float v_speed, float v_min, float v_max, CONST char* display_format, float power);
 CIMGUI_API bool             igDragFloat4(CONST char* label, float v[4], float v_speed, float v_min, float v_max, CONST char* display_format, float power);
-CIMGUI_API bool             igDragFloatRange2(CONST char* label, float* v_current_min, float* v_current_max, float v_speed = 1.0f, float v_min = 0.0f, float v_max = 0.0f, CONST char* display_format = "%.3f", CONST char* display_format_max = NULL, float power = 1.0f);
+CIMGUI_API bool             igDragFloatRange2(CONST char* label, float* v_current_min, float* v_current_max, float v_speed, float v_min, float v_max, CONST char* display_format, CONST char* display_format_max, float power);
 CIMGUI_API bool             igDragInt(CONST char* label, int* v, float v_speed, int v_min, int v_max, CONST char* display_format);                                       // If v_max >= v_max we have no bound
 CIMGUI_API bool             igDragInt2(CONST char* label, int v[2], float v_speed, int v_min, int v_max, CONST char* display_format);
 CIMGUI_API bool             igDragInt3(CONST char* label, int v[3], float v_speed, int v_min, int v_max, CONST char* display_format);
 CIMGUI_API bool             igDragInt4(CONST char* label, int v[4], float v_speed, int v_min, int v_max, CONST char* display_format);
-CIMGUI_API bool             igDragIntRange2(CONST char* label, int* v_current_min, int* v_current_max, float v_speed = 1.0f, int v_min = 0, int v_max = 0, CONST char* display_format = "%.0f", CONST char* display_format_max = NULL);
+CIMGUI_API bool             igDragIntRange2(CONST char* label, int* v_current_min, int* v_current_max, float v_speed, int v_min, int v_max, CONST char* display_format, CONST char* display_format_max);
 
 
 // Widgets: Input
@@ -439,4 +439,4 @@ CIMGUI_API void             ImDrawList_PrimVtx(ImDrawList* list, CONST struct Im
 CIMGUI_API void             ImDrawList_PrimWriteVtx(ImDrawList* list, CONST struct ImVec2 pos, CONST struct ImVec2 uv, ImU32 col);
 CIMGUI_API void             ImDrawList_PrimWriteIdx(ImDrawList* list, ImDrawIdx idx);
 CIMGUI_API void             ImDrawList_UpdateClipRect(ImDrawList* list);
-CIMGUI_API void             ImDrawList_UpdateTextureID(ImDrawList* list);
\ No newline at end of file
+CIMGUI_API void             ImDrawList_UpdateTextureID(ImDrawList* list);