diff --git a/nuts_bolts.c b/nuts_bolts.c
index a244bfb..af6d163 100644
--- a/nuts_bolts.c
+++ b/nuts_bolts.c
@@ -25,7 +25,6 @@
 #include "planner.h"
 
 #define MAX_INT_DIGITS 8 // Maximum number of digits in int32 (and float)
-extern float __floatunsisf (unsigned long);
 
 // Extracts a floating point value from a string. The following code is based loosely on
 // the avr-libc strtod() function by Michael Stumpf and Dmitry Xmelkov and many freely
@@ -79,7 +78,7 @@ int read_float(char *line, uint8_t *char_counter, float *float_ptr)
   
   // Convert integer into floating point.
   float fval;
-  fval = __floatunsisf(intval);
+  fval = (float)intval;
   
   // Apply decimal. Should perform no more than two floating point multiplications for the
   // expected range of E0 to E-4.
diff --git a/planner.c b/planner.c
index 846e403..7fc3e96 100644
--- a/planner.c
+++ b/planner.c
@@ -307,14 +307,14 @@ void plan_init()
   memset(&pl, 0, sizeof(pl)); // Clear planner struct
 }
 
-inline void plan_discard_current_block() 
+void plan_discard_current_block() 
 {
   if (block_buffer_head != block_buffer_tail) {
     block_buffer_tail = next_block_index( block_buffer_tail );
   }
 }
 
-inline block_t *plan_get_current_block() 
+block_t *plan_get_current_block() 
 {
   if (block_buffer_head == block_buffer_tail) { return(NULL); }
   return(&block_buffer[block_buffer_tail]);