diff --git a/sys/newlib/Makefile.include b/sys/newlib/Makefile.include
index 3b2523ee3b869dfcd367c01ccf1bbccc4dc8814f..19f88e302e67984bf02b2111eff074da5a9975ae 100644
--- a/sys/newlib/Makefile.include
+++ b/sys/newlib/Makefile.include
@@ -48,7 +48,7 @@ NEWLIB_INCLUDE_DIR ?= $(firstword $(wildcard $(NEWLIB_INCLUDE_PATTERNS)))
 # If nothing was found we will try to fall back to searching for a cross-gcc in
 # the current PATH and use a relative path for the includes
 ifeq (,$(NEWLIB_INCLUDE_DIR))
-  NEWLIB_INCLUDE_DIR := $(abspath $(wildcard $(dir $(shell command -v $(PREFIX)gcc))../$(TARGET_ARCH)/include))
+  NEWLIB_INCLUDE_DIR := $(abspath $(wildcard $(dir $(shell command -v $(PREFIX)gcc;))../$(TARGET_ARCH)/include))
 endif
 
 ifeq ($(TOOLCHAIN),llvm)