diff --git a/STM32F1/system/libmaple/stm32f1/include/series/stm32.h b/STM32F1/system/libmaple/stm32f1/include/series/stm32.h
index 9386dc3..1346885 100644
--- a/STM32F1/system/libmaple/stm32f1/include/series/stm32.h
+++ b/STM32F1/system/libmaple/stm32f1/include/series/stm32.h
@@ -185,12 +185,20 @@ extern "C" {
 #    elif defined(STM32_HIGH_DENSITY)
 #       define STM32_NR_INTERRUPTS      60
 #       define STM32_TIMER_MASK         0x1FE /* TIMER1--TIMER8 */
-#       define STM32_HAVE_FSMC          1
+#       if STM32_NR_GPIO_PORTS > 4
+#           define STM32_HAVE_FSMC      1
+#       else
+#           define STM32_HAVE_FSMC      0
+#       endif
 #       define STM32_HAVE_DAC           1
 #    elif defined(STM32_XL_DENSITY)
 #       define STM32_NR_INTERRUPTS      60
 #       define STM32_TIMER_MASK         0x7FFE /* TIMER1--TIMER14 */
-#       define STM32_HAVE_FSMC          1
+#       if STM32_NR_GPIO_PORTS > 4
+#           define STM32_HAVE_FSMC      1
+#       else
+#           define STM32_HAVE_FSMC      0
+#       endif
 #       define STM32_HAVE_DAC           1
 #    endif